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Derivative Financial Instruments - Additional Information (Details) - USD ($)
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Oct. 31, 2015
Debt Instrument [Line Items]        
Gain upon settlement of cash flow hedges, (less than $0.1 million) $ 100,000 $ 100,000    
2015 Credit Facility        
Debt Instrument [Line Items]        
Amount of hedged item       $ 262,500,000
Maximum borrowing capacity       350,000,000
2015 Interest Rate Swap        
Debt Instrument [Line Items]        
Notional amount       $ 262,500,000
Fixed interest rate       1.46%
Recurring        
Debt Instrument [Line Items]        
Derivative liabilities 267,000   $ 57,000  
Significant Observable Inputs (Level 2) | Recurring        
Debt Instrument [Line Items]        
Derivative liabilities 267,000   57,000  
Significant Observable Inputs (Level 2) | Recurring | Designated as Hedging Instrument        
Debt Instrument [Line Items]        
Derivative liabilities $ 143,000   $ 57,000