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Summary of Significant Accounting Policies (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 01, 2017
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
Unit
Sep. 30, 2016
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Number of reportable segments | Unit       2  
Stock-based compensation expense   $ 2,375 $ 1,740 $ 5,296 $ 4,097
Effect of adoption of new accounting pronouncement       1,480  
Additional Paid-in Capital [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Effect of adoption of new accounting pronouncement       2,100  
Deferred Tax Asset [Domain]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Effect of adoption of new accounting pronouncement       1,500  
Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Effect of adoption of new accounting pronouncement       $ (613)  
2006 Stock Incentive Plan | Minimum | Performance-based awards          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Amount to be settled of target award level (as a percent) 0.00%        
2006 Stock Incentive Plan | Maximum | Performance-based awards          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Amount to be settled of target award level (as a percent) 200.00%