Fair Value Disclosures - Reconciliation for all Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) - Capitalized Mortgage Loan Servicing Rights - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 41,923	$ 35,933	$ 42,489	$ 26,232
Total gains (losses) realized and unrealized:
Included in results of operations	1,481	2,038	(15)	9,596
Included in other comprehensive loss	0	0	0	0
Purchases, issuances, settlements, maturities and calls	1,023	1,506	1,953	3,649
Transfers in and/or out of Level 3	0	0	0	0
Ending balance	44,427	39,477	44,427	39,477
Amount of total gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at June 30	$ 1,481	$ 2,038	$ (15)	$ 9,596