Mortgage Banking - Servicing Portfolio (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Loan	Dec. 31, 2020 USD ($) Loan
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Loan	24,683	25,944
Investor, Principal Outstanding | $	$ 2,941,296	$ 2,947,045
Fannie Mae [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Loan	7,545	8,365
Investor, Principal Outstanding | $	$ 913,336	$ 998,359
Freddie Mac [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Loan	16,987	17,385
Investor, Principal Outstanding | $	$ 2,012,895	$ 1,925,717
Other Mortgage Banking [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Loan	90	105
Investor, Principal Outstanding | $	$ 6,805	$ 9,826
Federal Home Loan Bank [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Loan	61	89
Investor, Principal Outstanding | $	$ 8,260	$ 13,143