Variable Interest Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2015
Variable Interest Entity [Line Items]
Original benefit of contribution by tax credit investors	$ (4,561)	$ (4,721)
Liabilities	4,187,121	4,038,330
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Liabilities	$ 4,600	$ 4,700
Cloverleaf
Variable Interest Entity [Line Items]
Original benefit of contribution by tax credit investors			$ 5,600