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Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Thousands
 1 Months Ended 2 Months Ended 12 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Business Acquisition, Contingent Consideration [Line Items]          
Net rent expense     $ 1,200 $ 783 $ 341
Total settlement amount   $ 330      
Insurance reimbursement $ 174        
Selling, general, and administrative | Settled litigation          
Business Acquisition, Contingent Consideration [Line Items]          
Insurance reimbursement       174  
Litigation expense       $ 156