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Fair Value (Details)	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2021 USD ($) derivative	Jun. 30, 2021 USD ($) derivative	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Derivative instruments and Hedging Activities
Derivative, Notional Amounts Settled During Period		$ 150,000,000
Receipt (payment) for termination of forward interest rate swaps		6,962,000	$ (25,135,000)
Unrealized gain on terminated cash flow hedges		(2,654,000)	$ 0	$ 2,894,000
Interest Rate Swap | Cash Flow Hedges
Derivative instruments and Hedging Activities
Derivative, Notional Amount	$ 150,000,000	$ 150,000,000
Derivative, Notional Amounts Entered Into During Period	$ 150,000,000
Derivative, average cap interest rate	1.50%	1.50%
Reclassification out of Accumulated Other Comprehensive Income
Derivative instruments and Hedging Activities
Estimated hedging losses to be reclassified from accumulated other comprehensive loss into earnings within the next twelve months		$ 9,467,000
Not Designated as Hedging Instrument
Derivative instruments and Hedging Activities
Number of derivative instruments held | derivative	5	5
Not Designated as Hedging Instrument | Interest Rate Cap
Derivative instruments and Hedging Activities
Derivative, Notional Amount	$ 410,950,000	$ 410,950,000
Derivative, average cap interest rate	6.10%	6.10%

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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