Common Shareholders' Equity - Calculation of earning per share (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]
Income from continuing operations	$ 1,647	$ 3,659
Loss from discontinued operations	(1,327)	(1,033)
Net income	$ 320	$ 2,626
Weighted average common shares outstanding (basic) (in shares)	2,132	1,997
Incremental shares from assumed conversions of stock options	15	112
Weighted average common shares outstanding (diluted) (in shares)	2,147	2,109
Basic
Income per share from continuing operations (in dollars per share)	$ 0.77	$ 1.83
Loss per share from discontinued operations (in dollars per share)	$ (0.62)	$ (0.52)
Total net income per share (in dollars per share)	$ 0.15	$ 1.31
Diluted
Income per share from continuing operations (in dollars per share)	$ 0.77	$ 1.73
Loss per share from discontinued operations (in dollars per share)	$ (0.62)	$ (0.49)
Total net income per share (in dollars per share)	$ 0.15	$ 1.24