CONSOLIDATED STATEMENTS OF INCOME [Abstract] Total costs and expenses OPERATING INCOME INCOME BEFORE TAXES NET INCOME Net income CONSOLIDATED BALANCE SHEETS [Abstract] Total current assets Total assets Total current liabilities Total liabilities Total shareholders’ equity Beginning balance Ending balance Total liabilities and shareholders’ equity CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY [Abstract] Beginning balance (in Shares) Ending balance (in Shares) Common stock, shares issued (in Shares) Beginning balance (in Shares) Ending balance (in Shares) Treasury stock at cost (in Shares) Equity Components [Axis] CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract] Cash provided by operating activities Cash used in investing activities Cash used in financing activities Net decrease in cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] Investment Type [Axis] Fair Value Hierarchy and NAV [Axis] Balance at beginning of year Ending balance Total Product and Service [Axis] Beginning balance Ending balance Deferred revenues PROPERTY AND EQUIPMENT AND INTANGIBLE ASSETS [Abstract] Intangible Asset, Finite-Lived, Class [Axis] Net value Intangible assets definite-lived, net ACCRUED EXPENSES [Abstract] Total accrued expenses Accrued expenses INCOME TAXES [Abstract] Provision for income taxes Income tax expense Provision for income taxes, percent Total deferred tax assets Total deferred tax liabilities Net deferred tax asset LEASES [Abstract] Total lease expense, net of sublease income Total operating lease payments EMPLOYEE BENEFITS [Abstract] STOCK-BASED COMPENSATION PLANS [Abstract] Outstanding at beginning of year (in Shares) Outstanding at end of year (in Shares) Outstanding at beginning of year (in Dollars per share) Outstanding at end of year (in Dollars per share) Exercise Price Range [Axis] Award Type [Axis] Nonvested at beginning of year (in Shares) Nonvested at end of year (in Shares) Nonvested at beginning of year (in dollars per share) Nonvested at end of year (in dollars per share) COMMITMENTS AND CONTINGENCIES [Abstract] EARNINGS PER SHARE [Abstract] INCOME PER SHARE OF COMMON STOCK Weighted average common shares outstanding (in Shares) Diluted (in Shares) SEGMENT REPORTING [Abstract] Total other income Segments [Axis] Geographical [Axis] Consolidation Items [Axis] SUBSEQUENT EVENTS [Abstract] Total Compensation Total compensation Title and Position [Axis] Document Type Document Annual Report Current Fiscal Year End Date Document Period End Date Document Fiscal Year Focus Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Document Financial Statement Error Correction [Flag] ICFR Auditor Attestation Flag Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Auditor Name Auditor Firm ID Auditor Location Entity Central Index Key Amendment Flag Document Fiscal Period Focus REVENUES Total revenues Consolidated revenues COSTS AND EXPENSES COSTS AND EXPENSES: General and administrative expenses Franchise expenses Provision (recovery) for credit losses Depreciation and amortization expense Interest income Other income Other Income Basic (in Dollars per share) Net income per common share (in Dollars per share) Diluted (in Dollars per share) Net income per common share (in Dollars per share) WEIGHTED AVERAGE COMMON SHARES OUTSTANDING Basic (in Shares) Weighted average common shares (in Shares) ASSETS CURRENT ASSETS Cash and cash equivalents Short-term investments Short term investments Accounts receivable, less allowance for credit losses of $30 and $31, respectively Accounts receivable, allowance for credit losses Notes receivable, current Assets held for sale Deferred contract charges, current Prepaid expenses and other current assets LONG-TERM ASSETS Property and equipment, net Operating lease right-of-use assets, net Notes receivable, net of current portion Deferred tax asset, net Deferred contract charges, net of current portion LIABILITIES AND SHAREHOLDERS' EQUITY CURRENT LIABILITIES Accounts payable - trade Operating lease liabilities, current Deferred revenues, current LONG-TERM LIABILITIES Operating lease liabilities, net of current portion Deferred revenues, net of current portion COMMITMENTS AND CONTINGENCIES (SEE NOTE H) SHAREHOLDERS' EQUITY Common stock, $0.01 par value; authorized 26,000,000 shares; issued 25,647,171 and 25,647,171 shares, respectively; outstanding 14,211,566 and 14,211,566 shares, respectively Common stock, par value (in Dollars per share) Common stock, shares authorized (in Shares) Common stock, shares outstanding (in Shares) Additional paid-in capital Retained earnings Stock-based compensation expense RSU vested and taxes paid on RSUs RSU vested and taxes paid on RSUs (in Shares) CASH FLOWS FROM OPERATING ACTIVITIES: Adjustments to reconcile net income to cash provided by operating activities: Stock-based compensation expense Depreciation and amortization Depreciation and amortization expense Amortization of operating lease right-of-use assets Amortization of definite-lived intangible assets Amortization expense for intangible assets Non-cash lease expense Deferred income tax Changes in operating assets and liabilities: Accounts payable - trade Accrued expenses Operating lease liabilities Deferred revenues CASH FLOWS FROM INVESTING ACTIVITIES: Maturities of short-term investments Proceeds from sale of assets held for sale CASH FLOWS FROM FINANCING ACTIVITIES: SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION CASH PAID FOR: Franchise and state income taxes, net of refunds Federal income taxes, net of refunds Treasury stock, at cost Shares in treasury: 11,435,605 and 11,435,605 respectively Purchase of treasury stock Purchase of treasury stock (in Shares) Amortization of discount on short-term investment Accounts receivable Notes receivable Deferred contract charges Prepaid expenses and other current assets Purchases of short-term investments Purchase of assets held for sale Purchase of definite-lived intangible assets Purchase of property and equipment Purchase of treasury stock Taxes paid on issuance of restricted stock units