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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net income (loss) $ (16,842) $ (71,774)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:    
Depreciation and amortization 9,143 11,707
Provision for credit losses 0 3
Deferred income taxes 112 142
Shares issued for employee benefit plan 663 725
Employee and director stock-based compensation 3,364 4,698
Impairment of goodwill 0 49,075
Impairment of long-lived assets 148 49
Changes in operating assets and liabilities:    
Accounts receivable and contract assets 13,095 10,586
Inventories (914) 33,195
Prepaid expenses and other assets (1,621) 2,615
Accounts payable and accrued liabilities (5,478) (26,542)
Accrued income taxes 1,005 (1,224)
Net cash provided by (used for) operating activities 2,675 13,255
Cash flows from investing activities:    
Acquisitions of property, plant and equipment (2,696) (5,807)
Acquisitions of intangible assets (2,308) (3,295)
Net cash provided by (used for) investing activities (5,004) (9,102)
Cash flows from financing activities:    
Borrowings under line of credit 35,000 25,000
Repayments on line of credit (49,000) (38,000)
Treasury stock purchased (1,841) (855)
Net cash provided by (used for) financing activities (15,841) (13,855)
Effect of foreign currency exchange rates on cash and cash equivalents (1,453) (1,215)
Net increase (decrease) in cash and cash equivalents (19,623) (10,917)
Cash and cash equivalents at beginning of period 42,751 66,740
Cash and cash equivalents at end of period 23,128 55,823
Supplemental cash flow information:    
Income taxes paid 2,175 3,956
Interest paid $ 2,545 $ 3,843