Derivative Instruments - Additional information (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2021 agreement	Mar. 31, 2021 agreement	Dec. 31, 2021 USD ($) agreement	Dec. 31, 2020 USD ($)
Derivative instruments
Interest expense			$ 67,985	$ 63,024
Interest rate contracts
Derivative instruments
Borrowings at variable interest rates			$ 590,000	783,100
Number of interest rate swap agreements | agreement			5
Number of interest rate derivatives entered into | agreement		4
Notional amount outstanding			$ 100,000
Net fair value of swap asset (liability)			7,300	(4,000)
Fair value of interest rate swap, asset			8,000
Fair value of interest rate swap, liability			700
Interest expense			2,400	2,000
Derivative, accumulated gain (loss), net			$ 7,300	$ (3,800)
2021 Swap Agreements, Group 1
Derivative instruments
Number of interest rate swap agreements | agreement			2
Remaining maturity term			25 months
2021 Swap Agreements, Group 2
Derivative instruments
Number of interest rate swap agreements | agreement			2
Remaining maturity term			49 months
2019 Swap Ageement
Derivative instruments
Number of interest rate swap agreements | agreement			1
Notional amount outstanding			$ 100,000
Remaining maturity term			30 months
2016 Swap Agreement
Derivative instruments
Number of interest rate swap agreements expired | agreement	1