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Commitments, Contingencies and Concentrations of Risk (Details 2) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-Based Compensation      
Total share-based compensation expense $ 943 $ 177 $ 208
Total share-based compensation expense, net of tax 896 169 205
Diluted shares outstanding 16,609,954 10,984,034 10,630,720
Impact on diluted earnings per share (in dollars per share) $ 0.054 $ 0.015 $ 0.019
Stock option
     
Share-Based Compensation      
Total share-based compensation expense $ 943 $ 177 $ 208