Shareholders' Equity - Calculation of earning per share (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Equity [Abstract]
Income from continuing operations	$ 177	$ 275
Loss from discontinued operations		(212)
Net income	$ 177	$ 63
Weighted average common shares outstanding (basic) (in shares)	2,155	2,077
Incremental shares from assumed conversions of stock options	1	44
Weighted average common shares outstanding (diluted) (in shares)	2,156	2,121
Basic
Income per share from continuing operations (in dollars per share)	$ 0.08	$ 0.13
Loss per share from discontinued operations (in dollars per share)		$ (0.10)
Total net income per share	$ 0.08	$ 0.03
Diluted
Income per share from continuing operations (in dollars per share)	$ 0.08	$ 0.13
Loss per share from discontinued operations (in dollars per share)		$ (0.10)
Total net income per share	$ 0.08	$ 0.03