Derivatives - Offsetting Arrangements (Details) $ in Thousands	Sep. 30, 2023 USD ($) derivative	Dec. 31, 2022 USD ($)
Assets:
Derivative assets, gross amounts of recognized assets	$ 258,923	$ 177,827
Derivative asset, gross amounts offset	(6)	(4,523)
Derivative assets, net amounts of assets	258,917	173,304
Derivative asset, notional amount	3,615,268	3,218,042
Liabilities:
Derivative liability, gross amounts of liabilities	(6)	(8,247)
Derivative liability, gross amounts offset	6	4,523
Derivative liabilities, net amounts of liabilities	0	(3,724)
Derivative liability, notional amount	0	0
Derivative, net, gross amounts of assets/liabilities	258,917	169,580
Derivative assets, net amounts of assets/liabilities	258,917	169,580
Derivative, notional amount	$ 3,615,268	3,218,042
Minimum | Secured Overnight Financing Rate (SOFR)
Liabilities:
Interest rate	0.31%
Maximum | Secured Overnight Financing Rate (SOFR)
Liabilities:
Interest rate	3.78%
Interest rate swaps
Liabilities:
Number of interest rate swaps | derivative	75
Derivatives designated as hedging instruments
Assets:
Derivative assets, gross amounts of recognized assets	$ 170,712	133,168
Derivative asset, gross amounts offset	(6)	0
Derivative assets, net amounts of assets	170,706	133,168
Derivative asset, notional amount	1,758,578	2,122,222
Liabilities:
Derivative liability, gross amounts of liabilities	(6)	(3,724)
Derivative liability, gross amounts offset	6	0
Derivative liabilities, net amounts of liabilities	0	(3,724)
Derivative liability, notional amount	0	0
Derivatives not designated as hedging instruments
Assets:
Derivative assets, gross amounts of recognized assets	88,211	44,659
Derivative asset, gross amounts offset	0	(4,523)
Derivative assets, net amounts of assets	88,211	40,136
Derivative asset, notional amount	1,856,690	1,095,820
Liabilities:
Derivative liability, gross amounts of liabilities	0	(4,523)
Derivative liability, gross amounts offset	0	4,523
Derivative liabilities, net amounts of liabilities	0	0
Derivative liability, notional amount	$ 0	$ 0