Debt - Schedule of Carrying Values and Fair Values of Term Facility (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt financing fees $ (1,214) $ (1,408)
Total debt with debt financing fees 80,286 83,592
Carrying Amount | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 81,500 85,000
Carrying Amount | Short-term debt | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 17,500 15,750
Carrying Amount | Long-term debt | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 64,000 69,250
Fair Value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 81,500 85,000
Fair Value | Short-term debt | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 17,500 15,750
Fair Value | Long-term debt | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt $ 64,000 $ 69,250