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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Accounting Policies [Abstract]    
Allowance for doubtful accounts $ 171 $ 171,000
Total unrecognized compensation $ 3,600  
Vesting period for unrecognized compensation cost to be recognized (in years) 4 years