Shareholders' Equity - Calculation of earning per share (Details 1) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Equity [Abstract]
Net income	$ 1,753	$ 4,597
Weighted average common shares outstanding (basic) (in shares)	2,215	2,182
Unvested restricted stock	83	82
Weighted average common shares outstanding (diluted) (in shares)	2,298	2,264
Basic
Net income per share (in dollars per share)	$ 0.79	$ 2.11
Diluted
Net income per share (in dollars per share)	$ 0.76	$ 2.03