- Derivatives and Hedging Activities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Financial_Instrument	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Aug. 01, 2019 USD ($)	Jul. 31, 2019 USD ($) derivative_instrument
Derivative [Line Items]
Amount reclassified as increase to interest expense					$ 366
Interest expense	$ 65,095	$ 79,880	$ 77,883
Interest Rate Swap | Designated as Hedging Instrument | Other Assets
Derivative [Line Items]
Derivative asset	$ (1,928)	76
Cash Flow Hedging | Interest Rate Swap | Designated as Hedging Instrument
Derivative [Line Items]
Number of derivative instruments held	4				4
Derivative notional amount	$ 300,000			$ 300,000	$ 300,000
Cash Flow Hedging | Interest Rate Swap | Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Amount of Gain (Loss) recognized in OCI on Derivative	(1,625)	597
Amount of (Income) Loss Reclassified from AOCI into Income	$ (379)	$ (1,586)