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, 2018	Dec. 31, 2017
Numerator for both basic and diluted earnings per share:
Net income (loss)	$ 10,347	$ (11,553)
Denominator, basic shares	18,086	18,343
Effect of dilutive securities:
Stock-based compensation awards	115
Denominator, diluted shares	18,201	18,343
Basic earnings per share: (in dollars per share)	$ 0.57	$ (0.63)
Diluted earnings per share: (in dollars per share)	$ 0.57	$ (0.63)