Derivative Instruments and Hedging Activity - Amount of Loss Recognized in OCI - (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in OCI	$ (25)	$ (123)
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in OCI			$ 20	$ (445)	$ 40
Interest Rate Swap | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in OCI	$ (25)	$ (123)	$ 20	$ (445)	$ 40