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Shareholders' Equity (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Stockholders' Equity Note [Abstract]      
Net income (loss) $ (409) $ 531 $ 531
Dividends paid 62   802
Other comprehensive income, net of tax $ 578 $ 362 $ 315