Derivatives and Hedging Activities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) financial_instrument	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jul. 31, 2019 USD ($) instrument
Derivative [Line Items]
Amount reclassified as increase to interest expense	$ 4,848
Interest expense	55,201	$ 65,095	$ 79,880
Interest Rate Swap | Designated as Hedging Instrument | Other Liabilities
Derivative [Line Items]
Derivative liability	$ (17,963)	(1,928)
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
Cash Flow Hedging | Interest Rate Swap | Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Amount of gain (loss) recognized in OCI on derivative	(19,422)	(1,625)
Amount of (Income) Loss Reclassified from AOCI into Income	$ 3,387	$ (379)