CARES Act, Income Tax Effect.

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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- Definition

Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective income tax rate	1.00%	23.00%		20.00%	20.00%
Valuation allowances against deferred tax assets	$ 11,500			$ 11,500			$ 7,200
Net deferred tax liability	27,900			27,900			33,300
Income tax expense	(5)	$ (1,077)		(1,368)	$ (2,547)
Adoption adjustment	301,835	296,556	$ 276,609	301,835	296,556	$ 297,331	328,713	$ 285,696
Reduction to income taxes payable and deferred tax assets			1,300
Accounting Standards Update 2020-06 [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Adoption adjustment	(19,639)			(19,639)
Retained Earnings [Member]
Adoption adjustment	11,493	26,350	30,039	11,493	26,350	13,671	20,022	36,704
Retained Earnings [Member] \| Accounting Standards Update 2020-06 [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Adoption adjustment	(3,213)			(3,213)			3,200
Additional Paid-In Capital [Member]
Adoption adjustment	305,157	$ 293,022	$ 273,821	305,157	$ 293,022	$ 301,449	316,192	$ 271,782
Additional Paid-In Capital [Member] \| Accounting Standards Update 2020-06 [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Adoption adjustment	$ (16,426)			$ (16,426)			$ 16,400