Entity Central Index Key Amount represents Intercompany receivable. Long term debt and equipment financing facilities and capital lease obligations current. Equipment financing facilities and capital lease obligations noncurrent. Amount represents Intercompany payable. Intercompany Charges Income Expenses Interest (income) expense. Intercompany Interest Expenses Income Income Loss From Continuing Operations Before Income Loss From Equity Method Investments Proceeds from issuance of term loan. Repayments of borrowings under equipment financing facilities and other. Proceeds from issuance of common stock secondary offering. Repayments of term loan. Repayments of borrowings under equipment financing and capital lease obligations. Payments of issuance costs from common stock secondary offering. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable, less allowance of $17,584 and $11,829 as of September 30, 2018 and 2017, respectively Accounts Receivable Net Current Inventories, net Inventory Net Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net Property Plant And Equipment Net Goodwill Goodwill Intangibles, net Intangible Assets Net Excluding Goodwill Other assets, net Other Assets Noncurrent Total Assets Assets Liabilities and Stockholders' Equity Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued expenses Accrued Liabilities Current Current portions of long-term debt Long Term Debt And Equipment Financing Facilities And Capital Lease Obligations Current Total current liabilities Liabilities Current Borrowings under revolving lines of credit, net Long Term Line Of Credit Long-term debt, net Long Term Notes And Loans Deferred income taxes, net Deferred Tax Liabilities Noncurrent Long-term obligations under equipment financing and other, net Equipment Financing Facilities And Capital Lease Obligations Noncurrent Other long-term liabilities Other Liabilities Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 9) Commitments And Contingencies Convertible preferred stock; $0.01 par value; aggregate liquidation preference $400,000; 400,000 shares authorized, issued and outstanding as of September 30, 2018; none authorized, issued and outstanding as of September 30, 2017 Temporary Equity Carrying Amount Attributable To Parent Stockholders' equity: Stockholders Equity [Abstract] Common stock (voting); $.01 par value; 100,000,000 shares authorized; 68,135,790 issued and outstanding as of September 30, 2018 and 67,700,858 issued and outstanding as of September 30, 2017 Common Stock Value Undesignated preferred stock; 5,000,000 shares authorized, none issued or outstanding Preferred Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Retained earnings Retained Earnings Accumulated Deficit Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Total stockholders' equity Stockholders Equity Total Liabilities and Stockholders' Equity Liabilities And Stockholders Equity Accounts receivable, allowances Allowance For Doubtful Accounts Receivable Current Convertible preferred stock, par value Temporary Equity Par Or Stated Value Per Share Convertible preferred stock. aggregate liquidation preference Temporary Equity Liquidation Preference Convertible preferred stock, shares authorized Temporary Equity Shares Authorized Convertible preferred stock, shares issued Temporary Equity Shares Issued Convertible preferred stock, shares outstanding Temporary Equity Shares Outstanding Common stock (voting), par value Common Stock Par Or Stated Value Per Share Common stock (voting), shares authorized Common Stock Shares Authorized Common Stock (Voting), issued Common Stock Shares Issued Common Stock (voting), outstanding Common Stock Shares Outstanding Undesignated Preferred Stock, shares authorized Preferred Stock Shares Authorized Undesignated Preferred Stock, issued Preferred Stock Shares Issued Undesignated Preferred Stock, outstanding Preferred Stock Shares Outstanding Net income (loss) available to common stockholders. Income Statement [Abstract] Net sales Revenues Cost of products sold Cost Of Goods And Services Sold Gross profit Gross Profit Operating expense Operating Expenses [Abstract] Selling, general and administrative Selling General And Administrative Expense Depreciation Depreciation Amortization Amortization Of Intangible Assets Total operating expense Operating Expenses Income (loss) from operations Operating Income Loss Interest expense, financing costs, and other Interest Expense Income (loss) before provision for income taxes Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Provision for (benefit from) income taxes Income Tax Expense Benefit Net income (loss) Net Income Loss Dividends on preferred shares Preferred Stock Dividends Income Statement Impact Net income (loss) attributable to common shareholders Net Income Loss Available To Common Stockholders Weighted-average common stock outstanding: Weighted Average Number Of Shares Outstanding [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Diluted Weighted Average Number Of Diluted Shares Outstanding Net income (loss) per share: Earnings Per Share [Abstract] Basic Earnings Per Share Basic Diluted Earnings Per Share Diluted Preferred stock undeclared cumulative dividends. Dividends on preferred shares Cumulative preferred share dividends undeclared Preferred Stock Undeclared Cumulative Dividends Preferred share dividends declared and paid Dividends Preferred Stock Cash Statement Of Income And Comprehensive Income [Abstract] Net income (loss) Other comprehensive income (loss): Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract] Foreign currency translation adjustment Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax Total other comprehensive income (loss) Oci Before Reclassifications Net Of Tax Attributable To Parent Comprehensive income (loss) Comprehensive Income Net Of Tax Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income [Member] Statement [Line Items] Statement [Line Items] Balance Balance (in shares) Shares Outstanding Issuance of common stock, net of shares withheld for taxes Stock Issued During Period Value Share Based Compensation Issuance of common stock, net of shares withheld for taxes (Shares) Stock Issued During Period Shares Share Based Compensation Issuance of common stock in connection with RSG acquisition Stock Issued During Period Value Acquisitions Issuance of common stock in connection with RSG acquisition (shares) Stock Issued During Period Shares Acquisitions Issuance of common stock from secondary offering, net of issuance costs Stock Issued During Period Value New Issues Issuance of common stock from secondary offering, net of issuance costs (Shares) Stock Issued During Period Shares New Issues Issuance costs related to secondary offering of common stock Adjustments To Additional Paid In Capital Stock Issued Issuance Costs Stock-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Other comprehensive income (loss) Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Dividends on preferred shares Dividends Preferred Stock Balance Balance (in shares) The aggregate amount of interest expenses and other financing costs. Statement Of Cash Flows [Abstract] Operating Activities Net Cash Provided By Used In Operating Activities [Abstract] Net income (loss) Profit Loss Adjustments to reconcile net income to net cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation and amortization Depreciation And Amortization Stock-based compensation Share Based Compensation Certain interest expense and other financing costs Interest Expenses And Other Financing Costs Loss on debt extinguishment Gains Losses On Extinguishment Of Debt Gain on sale of fixed assets Gain Loss On Sale Of Property Plant Equipment Deferred income taxes Deferred Income Taxes And Tax Credits Changes in operating assets and liabilities, net of the effects of businesses acquired: Increase Decrease In Operating Capital [Abstract] Accounts receivable Increase Decrease In Accounts Receivable Inventories Increase Decrease In Inventories Prepaid expenses and other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Accounts payable and accrued expenses Increase Decrease In Accounts Payable And Accrued Liabilities Other liabilities Increase Decrease In Other Operating Liabilities Net cash provided by (used in) operating activities Net Cash Provided By Used In Operating Activities Investing Activities Net Cash Provided By Used In Investing Activities [Abstract] Purchases of property and equipment Payments To Acquire Property Plant And Equipment Acquisition of businesses, net Payments To Acquire Businesses Net Of Cash Acquired Proceeds from the sale of assets Proceeds From Sale Of Productive Assets Net cash provided by (used in) investing activities Net Cash Provided By Used In Investing Activities Financing Activities Net Cash Provided By Used In Financing Activities [Abstract] Borrowings under revolving lines of credit Proceeds From Long Term Lines Of Credit Repayments under revolving lines of credit Repayments Of Long Term Lines Of Credit Borrowings under term loan Proceeds From Issuance Of Term Loan Repayments under term loan Repayments Of Debt Borrowings under senior notes Proceeds From Issuance Of Senior Long Term Debt Payment of debt issuance costs Payments Of Debt Issuance Costs Repayments under equipment financing facilities and other Repayments Of Borrowings Under Equipment Financing Facilities And Other Proceeds from issuance of convertible preferred stock Proceeds From Issuance Of Redeemable Convertible Preferred Stock Proceeds from secondary offering of common stock Proceeds From Issuance Of Common Stock Secondary Offering Payment of stock issuance costs Payments Of Stock Issuance Costs Payment of dividends on preferred stock Payments Of Dividends Preferred Stock And Preference Stock Proceeds from issuance of common stock related to equity awards Proceeds From Issuance Of Common Stock Taxes paid related to net share settlement of equity awards Payments Related To Tax Withholding For Share Based Compensation Excess tax benefit from stock-based compensation Excess Tax Benefit From Share Based Compensation Financing Activities Net cash provided by (used in) financing activities Net Cash Provided By Used In Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Net increase (decrease) in cash and cash equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and cash equivalents, beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and cash equivalents, end of period Cash paid during the period for: Supplemental Cash Flow Information [Abstract] Interest Interest Paid Net Income taxes, net of tax refunds Income Taxes Paid Net Organization Consolidation And Presentation Of Financial Statements [Abstract] Company Overview Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Net Income (Loss) Per Share Earnings Per Share [Text Block] The disclosure describes the Company's prepaid and other current assets. Prepaid Expenses and Other Current Assets [Abstract] Prepaid Expenses And Other Current Assets [Abstract] Prepaid Expenses and Other Current Assets Prepaid Expenses And Other Current Assets [Text Block] Property Plant And Equipment [Abstract] Property and Equipment Property Plant And Equipment Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill And Intangible Assets Disclosure [Text Block] Debt Disclosure [Abstract] Financing Arrangements Debt Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Equity [Abstract] Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock-based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Segment Reporting [Abstract] Geographic and Product Data Segment Reporting Disclosure [Text Block] Entire disclosure of subsidiary guarantees obligations of debt. Supplemental Guarantor Information Subsidiary Guarantees Obligations Of Debt Disclosure [Text Block]