Derivative Instruments - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Jul. 22, 2016	Sep. 15, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 100,000
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	300,000,000
Interest rate swaps, fair value	$ 6,800,000
2015 Term Loan [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Number of Instruments Held			2
Derivative, Notional Amount			$ 150,000,000
Derivative, Fixed Interest Rate			2.70%
2016 Term Loan [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Number of Instruments Held		2
Derivative, Notional Amount		$ 150,000,000
Derivative, Fixed Interest Rate		2.90%