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Employee Benefit Plan (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Defined Contribution Plan Disclosure [Line Items]      
Employee benefit plan, Company's portion vested at time of match (as a percent) 100.00%    
Employee benefit plan expense $ 1,049 $ 824 $ 908
Participant's first 3% of deferrals      
Defined Contribution Plan Disclosure [Line Items]      
Employee benefit plan, Company match (as a percent) 100.00%    
Participant's second 2% of deferrals      
Defined Contribution Plan Disclosure [Line Items]      
Employee benefit plan, Company match (as a percent) 50.00%