Shareholders' Equity - Calculation of earning per share (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Equity [Abstract]
Net income (loss)	$ 744	$ (3,301)	$ 4,136	$ (2,999)
Weighted average common shares outstanding (basic) (in shares)	2,179	2,138	2,179	2,141
Incremental shares from assumed conversions of stock options (in shares)
Unvested restricted stock	82	124	82	124
Weighted average common Shares outstanding (diluted) (in shares)	2,261	2,262	2,261	2,265
Basic
Net income (loss) per share (in dollars per share)	$ 0.34	$ (1.54)	$ 1.90	$ (1.40)
Diluted
Net income (loss) per share (in dollars per share)	$ 0.33	$ (1.46)	$ 1.83	$ (1.32)