Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities:
Net loss	$ (37,285)	$ (65,174)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	40,287	36,694
Amortization of deferred drydocking and survey costs	18,136	21,582
Amortization of debt premium and discounts	765	1,986
Provision for deferred income taxes	145	648
Loss on asset dispositions, net	1,090	2,880
Gain on bargain purchase	(1,300)	0
Loss on debt extinguishment	0	59
Affiliate credit loss impairment credit	0	(1,000)
Long-lived asset impairment credit	(500)	0
Loss on warrants	14,175	0
Stock-based compensation expense	3,421	2,676
Changes in assets and liabilities, net of effects of business acquisition:
Trade and other receivables	(35,085)	22,394
Changes in due to/from affiliates, net	(20)	4,693
Accounts payable	8,072	(792)
Accrued expenses	2,354	(2,074)
Deferred drydocking and survey costs	(31,063)	(6,771)
Other, net	(16,419)	(7,234)
Net cash provided by (used in) operating activities	(33,227)	10,567
Cash flows from investing activities:
Proceeds from asset dispositions	8,163	29,560
Acquisitions, net of cash acquired	(29,525)	0
Additions to properties and equipment	(5,380)	(1,861)
Net cash provided by (used in) investing activities	(26,742)	27,699
Cash flows from financing activities:
Principal payments on long-term debt	0	(37,901)
Debt issuance and modification costs	(371)	(855)
Debt extinguishment premium	0	(59)
Tax on share-based awards	(2,176)	(758)
Net cash used in financing activities	(2,547)	(39,573)
Net change in cash, cash equivalents and restricted cash	(62,516)	(1,307)
Cash, cash equivalents and restricted cash at beginning of period	154,276	155,225
Cash, cash equivalents and restricted cash at end of period	91,760	153,918
Supplemental disclosure of cash flow information:
Interest, net of amounts capitalized	7,626	7,028
Income taxes	9,330	6,609
Supplemental disclosure of noncash investing activities:
Acquisition of SPO	162,648	0
SPO Acquisition Warrants [Member]
Supplemental disclosure of noncash investing activities:
Warrants issued for SPO acquisition	$ 162,648	$ 0