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Unaudited Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Cash flows from operating activities:    
Net income (loss) $ 2,158 $ (9,424)
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
Depreciation and amortization expense 15,256 17,817
Stock-based compensation expense 1,589 1,835
Amortization of deferred financing costs 449 469
Deferred income tax provision (benefit) 396 (174)
Gains on disposals of assets (210) (543)
Other, net 17 550
Changes in operating assets and liabilities:    
Accounts receivable (745) (9,086)
Inventories (12,802) (13,090)
Accounts payable and accrued liabilities (18,329) (4,555)
Deferred revenue 4,179 4,324
Other operating assets and liabilities, net 2,124 1,142
Net cash flows used in operating activities (5,918) (10,735)
Cash flows from investing activities:    
Capital expenditures (6,568) (2,858)
Proceeds from disposition of property and equipment 223 869
Other, net (48) (67)
Net cash flows used in investing activities (6,393) (2,056)
Cash flows from financing activities:    
Revolving credit facility borrowings 27,865 367
Revolving credit facility repayments (22,865) (367)
Repayment of 1.50% convertible senior notes (17,315) 0
Other debt and finance lease repayments, net (106) (165)
Payment of financing costs (21) (68)
Shares added to treasury stock as a result of net share settlements due to vesting of stock awards (1,936) (990)
Net cash flows used in financing activities (14,378) (1,223)
Effect of exchange rate changes on cash and cash equivalents 478 320
Net change in cash and cash equivalents (26,211) (13,694)
Cash and cash equivalents, beginning of period 42,018 52,852
Cash and cash equivalents, end of period 15,807 39,158
Cash paid (received) for:    
Interest 485 522
Income taxes, net $ (2,465) $ 119