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Stock-Based Compensation Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 04, 2013
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Jul. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted, in shares   396,688      
Options exercises in period, intrinsic value   $ 4,600 $ 5,500 $ 300  
Excess tax benefit from stock options   1,500      
Tax Benefit from exercise of stock options, financing activities   $ 0 $ 1,536 $ 0  
Amended Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of additional shares authorized (in shares) 210,000        
Number of shares authorized (in shares) 14,242,061        
Capital shares reserved for future issuance (in shares)   5,230,642      
2015 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares)         8,400,000
Granted, in shares   243,673      
Number of shares available for grant (in shares)   8,015,845      
Director [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted, in shares   31,871      
Shares vested in period, fair value   $ 800      
Restricted Stock (RSAs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted, in shares   31,871      
Restricted Stock (RSAs) [Member] | 2015 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Non-option equity instruments, granted (in shares)   78,621      
Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted, in shares   87,203      
Fair value of grants in period   $ 2,200      
Restricted Stock Units (RSUs) [Member] | 2015 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Non-option equity instruments, granted (in shares)   61,861