DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions |
Sep. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable | $ 33.9 | $ 30.8 |
| Less: allowance for doubtful accounts | 0.2 | 0.3 |
| Accounts receivable, net | 33.7 | 30.5 |
| Contracts in transit | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable | 19.3 | 10.2 |
| Contracts in transit | United States Government | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable | 7.1 | |
| Trade receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable | 5.8 | 13.7 |
| Factory receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable | $ 8.8 | $ 6.9 |