Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Basic EPS:
Net Income (Loss)	$ (309,382)	$ 114,656
Income, Share Amounts	11,902	11,753
Earnings (Loss) Per Share, Basic	$ (25.99)	$ 9.76
Dilutive Securities:
Dilutive Restricted Stock Unit Awards	0	25
Dilutive Stock Option Awards	0	0
Diluted EPS:
Net Income (Loss) Available to Common Stockholders, Diluted	$ (309,382)	$ 114,656
Weighted Average Number of Shares Outstanding, Diluted	11,902	11,778
Earnings (Loss) Per Share, Diluted	$ (25.99)	$ 9.74
Stock Options [Member]
Earnings Per Share (Textual) [Abstract]
Antidilutive shares not included in the computation of diluted EPS	300	500
Restricted Stock Units (RSUs) [Member]
Earnings Per Share (Textual) [Abstract]
Antidilutive shares not included in the computation of diluted EPS	200	300
Performance Shares [Member]
Earnings Per Share (Textual) [Abstract]
Antidilutive shares not included in the computation of diluted EPS	100	100
Warrant [Member]
Earnings Per Share (Textual) [Abstract]
Antidilutive shares not included in the computation of diluted EPS	0	2,100