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Share Based Payments and Employee Benefit Plans (Details 4) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Share Based Payments and Employee Benefit Plans    
Employee contribution (as a percent) 25.00%  
Employer's match of the first 4% of employee contributions (as a percent) 50.00%  
Percentage of eligible compensation, matched 50% by employer 4.00%  
Basic matching contributions recorded $ 473 $ 274