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Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 227	$ 689
Unearned compensation	1,845
Performance Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned compensation related to options	$ 12
Remaining service period	3 months
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining requisite service period	27 months
Time-Vested Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned compensation related to options	$ 478
Remaining service period	20 months
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	3 years
Award contractual term	10 years
Estimated fair value	$ 325
Options Outstanding (shares)	1,040,803
Certain Employees [Member] | Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted	1,119,464
Options forfeited	78,661

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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