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Derivative Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Derivative [Line Items]    
Derivative, notional amount $ 51,500  
Interest rate swap | Cash flow hedging | Designated as hedging instrument | Other accrued liabilities    
Derivative [Line Items]    
Interest rate swap liabilities designated as cash flow hedge 86 $ 15
Interest rate swap | Cash flow hedging | Designated as hedging instrument | Other non-current assets    
Derivative [Line Items]    
Interest rate swap assets designated as cash flow hedge $ 259  
Interest rate swap | Cash flow hedging | Designated as hedging instrument | Other non-current liabilities    
Derivative [Line Items]    
Interest rate swap liabilities designated as cash flow hedge   $ 28