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Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2019	$ 0	$ 0	$ (163)	$ 0	$ 0	$ (163)	$ 40	$ 1,367,521	$ (352,526)	$ (236)	$ 1,611	$ 1,016,410
Total comprehensive income (loss)							0	0	(129,068)	817	(120)	(128,371)
Amortization of share-based awards							0	2,124	0	0	0	2,124
Balance at Jun. 30, 2020							40	1,369,645	(481,757)	581	1,491	890,000
Balance at Mar. 31, 2020							40	1,368,325	(371,134)	133	1,532	998,896
Total comprehensive income (loss)							0	0	(110,623)	448	(41)	(110,216)
Amortization of share-based awards							0	1,320	0	0	0	1,320
Balance at Jun. 30, 2020							40	1,369,645	(481,757)	581	1,491	890,000
Balance at Dec. 31, 2020							41	1,371,809	(548,931)	(804)	1,157	823,272
Total comprehensive income (loss)							0	0	(64,777)	(278)	(397)	(65,452)
Amortization of share-based awards							0	1,918	0	0	0	1,918
Balance at Jun. 30, 2021							41	1,373,727	(613,708)	(1,082)	760	759,738
Balance at Mar. 31, 2021							41	1,372,846	(584,246)	(875)	945	788,711
Total comprehensive income (loss)							0	0	(29,462)	(207)	(185)	(29,854)
Amortization of share-based awards							0	881	0	0	0	881
Balance at Jun. 30, 2021							$ 41	$ 1,373,727	$ (613,708)	$ (1,082)	$ 760	$ 759,738

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The value of stock issued during the period for amortization and cancellation of restricted stock.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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