Basis Of Presentation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Basis Of Presentation [Abstract]
Weighted average shares outstanding (basic)	4,373	4,331	4,366	4,326
Impact of common stock equivalents		21		21
Weighted average shares outstanding (diluted)	4,373	4,352	4,366	4,347
Net (Loss) Income	$ (5,181)	$ 3,342	$ (1,679)	$ 6,362
Basic earnings per share	$ (1.18)	$ 0.77	$ (0.38)	$ 1.47
Diluted earnings per share	$ (1.18)	$ 0.77	$ (0.38)	$ 1.46