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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Cash flows from operating activities:      
Net loss $ (9,540) $ (63,993) $ (468,383)
Adjustments to reconcile net loss to net cash provided by operating activities:      
Depreciation and amortization expense 67,334 80,741 98,543
Impairments of goodwill 0 0 406,056
Impairments of inventories 0 3,581 31,151
Impairments of fixed and lease assets 0 4,166 12,447
Stock-based compensation expense 6,852 7,879 8,431
Amortization of debt discount and deferred financing costs 1,886 2,314 7,736
Deferred income tax provision (benefit) 2,020 (8,639) (24,404)
Release of foreign currency translation adjustments on liquidation of an international operation 0 9,320 0
Gains on extinguishment of 1.50% convertible senior notes (176) (4,022) (10,721)
Gains on disposals of assets (2,856) (6,472) (2,444)
Other, net 2,066 (511) 4,668
Changes in operating assets and liabilities, net of effect from acquired business:      
Accounts receivable (35,443) (24,407) 63,876
Inventories (17,364) (10,334) 17,578
Accounts payable and accrued liabilities 18,183 17,727 (37,315)
Deferred revenue 1,554 (148) 25,549
Other operating assets and liabilities, net (1,654) (8) (13)
Net cash flows provided by operating activities 32,862 7,194 132,755
Cash flows from investing activities:      
Capital expenditures (20,266) (17,517) (12,749)
Proceeds from disposition of property and equipment 5,877 11,527 9,601
Acquisition of business, net of cash acquired (8,125) 0 0
Other, net (211) (636) (581)
Net cash flows used in investing activities (22,725) (6,626) (3,729)
Cash flows from financing activities:      
Revolving credit facility borrowings 10,090 12,873 72,173
Revolving credit facility repayments (10,090) (31,873) (105,104)
Payment of promissory note to seller of GEODynamics, Inc. (10,000) 0 0
Issuance of 4.75% convertible senior notes 0 135,000 0
Purchases of 1.50% convertible senior notes (8,450) (125,952) (20,078)
Other debt and finance lease repayments, net (732) (230) (8,222)
Payment of financing costs (105) (7,791) (1,041)
Shares added to treasury stock as a result of net share settlements due to vesting of stock awards (1,002) (1,595) (2,745)
Net cash flows used in financing activities (20,289) (19,568) (65,017)
Effect of exchange rate changes on cash and cash equivalents (682) (159) (491)
Net change in cash and cash equivalents (10,834) (19,159) 63,518
Cash and cash equivalents, beginning of period 52,852 72,011 8,493
Cash and cash equivalents, end of period 42,018 52,852 72,011
Cash paid (received) for:      
Interest 8,339 6,532 6,402
Income taxes, net $ 534 $ 152 $ (36,766)