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	$ (5,165)	$ (42,031)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	37,537	33,488
Amortization of debt issuance costs	596	590
Share-based compensation	1,575	1,672
Deferred income taxes	(1,306)	(722)
Gain on disposition of assets, net	(367)
Unrealized foreign currency (gain) loss	(3,333)	2,603
Change in fair value of contingent consideration	3,992
Changes in operating assets and liabilities:
Accounts receivable, net	(2,484)	906
Income tax receivable, net of income tax payable	(2,419)	1,230
Other current assets	(1,961)	(534)
Accounts payable and accrued liabilities	(18,036)	(9,411)
Deferred recertification and dry dock costs, net	(17,154)	(5,508)
Other, net	3,133	304
Net cash used in operating activities	(5,392)	(17,413)
Cash flows from investing activities:
Capital expenditures	(6,665)	(623)
Proceeds from sale of assets	365
Net cash used in investing activities	(6,300)	(623)
Cash flows from financing activities:
Debt issuance costs		(136)
Repurchases of common stock	(4,983)
Payments related to tax withholding for share-based compensation	(564)	(1,525)
Proceeds from issuance of ESPP shares	239	173
Net cash used in financing activities	(9,424)	(5,408)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	1,187	(1,005)
Net decrease in cash and cash equivalents and restricted cash	(19,929)	(24,449)
Cash and cash equivalents and restricted cash:
Balance, beginning of year	189,111	327,127
Balance, end of period	169,182	302,678
MARAD Debt (matures February 2027)
Cash flows from financing activities:
Repayment of loan debt	$ (4,116)	$ (3,920)