Shareholders' Equity - Calculation of earning per share (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Equity [Abstract]
Income from continuing operations	$ 306	$ 1,107	$ 1,346	$ 2,588
Loss from discontinued operations	(450)	(203)	(1,121)	(550)
Net income (loss)	$ (144)	$ 904	$ 225	$ 2,038
Weighted average common shares outstanding (basic) (in shares)	2,146	1,982	2,125	1,982
Incremental shares from assumed conversions of stock options	6	89	19	117
Weighted average common shares outstanding (diluted) (in shares)	2,152	2,071	2,144	2,099
Basic
Income per share from continuing operations (in dollars per share)	$ 0.14	$ 0.56	$ 0.63	$ 1.31
Loss per share from discontinued operations (in dollars per share)	$ (0.21)	$ (0.10)	$ (0.53)	$ (0.28)
Total net income (loss) per share (in dollars per share)	$ (0.07)	$ 0.46	$ 0.10	$ 1.03
Diluted
Income per share from continuing operations (in dollars per share)	$ 0.14	$ 0.53	$ 0.63	$ 1.23
Loss per share from discontinued operations (in dollars per share)	$ (0.21)	$ (0.10)	$ (0.52)	$ (0.26)
Total net income (loss) per share (in dollars per share)	$ (0.07)	$ 0.43	$ 0.11	$ 0.97