Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (42,031)	$ (3,050)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	33,488	34,566
Amortization of debt issuance costs	590	810
Share-based compensation	1,672	1,904
Deferred income taxes	(722)	(892)
Unrealized foreign currency (gain) loss	2,603	(951)
Changes in operating assets and liabilities:
Accounts receivable, net	906	(463)
Income tax receivable	1,230	6,256
Other current assets	(534)	9,361
Accounts payable and accrued liabilities	(4,646)	(4,881)
Other, net	9,969	2,791
Net cash provided by (used in) operating activities	(17,413)	39,869
Cash flows from investing activities:
Capital expenditures	(623)	(1,329)
Net cash used in investing activities	(623)	(1,329)
Cash flows from financing activities:
Debt issuance costs	(136)	(43)
Payments related to tax withholding for share-based compensation	(1,525)	(1,878)
Proceeds from issuance of ESPP shares	173	217
Net cash used in financing activities	(5,408)	(59,885)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(1,005)	406
Net decrease in cash and cash equivalents and restricted cash	(24,449)	(20,939)
Cash and cash equivalents and restricted cash:
Balance, beginning of year	327,127	291,320
Balance, end of period	302,678	270,381
Term Loan Repaid September 2021
Cash flows from financing activities:
Repayment of loan debt		(875)
Nordea Q5000 Loan Matured January 2021
Cash flows from financing activities:
Repayment of loan debt		(53,572)
MARAD Debt Maturing February 2027
Cash flows from financing activities:
Repayment of loan debt	$ (3,920)	$ (3,734)