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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Cash flows from operating activities    
Net loss $ (3,486) $ (9,199)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation expense 2,570 3,423
Amortization of intangible assets 6,016 6,218
Inventory write down 892 194
Stock-based compensation expense 841 2,151
Deferred income taxes 421 (266)
Noncash losses and other, net 1,398 2,283
Changes in operating assets and liabilities    
Accounts receivable—trade (10,047) (9,168)
Inventories (18,123) (23,031)
Prepaid expenses and other assets 1,037 1,298
Cost and estimated profit in excess of billings 769 (6,871)
Accounts payable, deferred revenue and other accrued liabilities (5,527) 11,851
Billings in excess of costs and estimated profits earned 111 (3,758)
Net cash used in operating activities (23,128) (24,875)
Cash flows from investing activities    
Capital expenditures for property and equipment (1,083) (860)
Proceeds from sale of property and equipment 264 118
Net cash used in investing activities (819) (742)
Cash flows from financing activities    
Borrowings on Credit Facility 119,426 95,883
Repayments on Credit Facility (94,426) (95,883)
Payment of capital lease obligations (273) (239)
Repurchases of stock (5,370) (360)
Net cash provided by (used in) financing activities 19,357 (599)
Effect of exchange rate changes on cash 325 (40)
Net decrease in cash, cash equivalents and restricted cash (4,265) (26,256)
Cash, cash equivalents and restricted cash at beginning of period 51,029 46,858
Cash, cash equivalents and restricted cash at end of period 46,764 20,602
Noncash activities    
Operating lease right of use assets obtained in exchange for lease obligations 1,835 1,320
Finance lease right of use assets obtained in exchange for lease obligations 926 100
Conversion of debt to common stock $ 113,650 $ 0