Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Numerator for both basic and diluted earnings per share:
Net (loss) income	$ (91,655)	$ (625)
Denominator, basic shares	18,137	18,107
Effect of dilutive securities:
Stock-based compensation awards	0	0
Denominator, diluted shares	18,137	18,107
Basic (loss) earnings per share: (in dollars per share)	$ (5.05)	$ (0.03)
Diluted (loss) earnings per share: (in dollars per share)	$ (5.05)	$ (0.03)