Goodwill and Intangible Assets, Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Core Deposits [Member]
Estimated future amortization expense
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 8,811
Finite-Lived Intangible Assets, Amortization Expense, Year Two	8,811
Finite-Lived Intangible Assets, Amortization Expense, Year Three	8,811
Finite-Lived Intangible Assets, Amortization Expense, Year Four	8,811
Finite-Lived Intangible Assets, Amortization Expense, Year Five	8,811
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	5,227
Total estimated amortization expense and MSRs decay	49,282	$ 58,093	$ 66,904
Other Intangible Assets [Member]
Estimated future amortization expense
Total estimated amortization expense and MSRs decay	0	$ 0	$ 1,350
Servicing Contracts [Member]
Estimated future amortization expense
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	13,714
Finite-Lived Intangible Assets, Amortization Expense, Year Two	10,364
Finite-Lived Intangible Assets, Amortization Expense, Year Three	9,238
Finite-Lived Intangible Assets, Amortization Expense, Year Four	8,108
Finite-Lived Intangible Assets, Amortization Expense, Year Five	7,301
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	28,626
Total estimated amortization expense and MSRs decay	$ 77,351