Derivative and Hedging Activities (Details) $ in Thousands		3 Months Ended
	Jun. 06, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Cash Paid on Hedge	$ (20,400)
Unrealized Gain (Loss) on Derivatives		$ 0	$ (5,900)
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net		1,300
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		(300)	$ 400
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of Interest Rate Derivatives Held			2
Derivative, Notional Amount		$ 300,000	$ 300,000