Loan Portfolio and Allowance for Credit Losses, Type of Collateral Dependent Loans by Portfolio Segment (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Loans and Leases Receivable [Abstract]
Total loans	$ 4,540,559
Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	27,013
Investment Securities/Cash [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Commercial [Member]
Loans and Leases Receivable [Abstract]
Total loans	199,886
Commercial [Member] | Commercial Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	179,624
Commercial [Member] | Commercial Real Estate [Member] | Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	292
Commercial [Member] | Commercial Real Estate [Member] | Investment Securities/Cash [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Commercial [Member] | Commercial Real Estate [Member] | Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Commercial [Member] | Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	20,262
Commercial [Member] | Other [Member] | Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	27
Commercial [Member] | Other [Member] | Investment Securities/Cash [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Commercial [Member] | Other [Member] | Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Real Estate Mortgage - 1 to 4 Family [Member]
Loans and Leases Receivable [Abstract]
Total loans	4,330,415
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]
Loans and Leases Receivable [Abstract]
Total loans	4,018,378
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	22,902
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Investment Securities/Cash [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]
Loans and Leases Receivable [Abstract]
Total loans	58,279
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	272
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Investment Securities/Cash [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]
Loans and Leases Receivable [Abstract]
Total loans	253,758
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	3,499
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Investment Securities/Cash [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Installment [Member]
Loans and Leases Receivable [Abstract]
Total loans	10,258
Installment [Member] | Real Estate [Member]
Loans and Leases Receivable [Abstract]
Total loans	21
Installment [Member] | Investment Securities/Cash [Member]
Loans and Leases Receivable [Abstract]
Total loans	0
Installment [Member] | Other [Member]
Loans and Leases Receivable [Abstract]
Total loans	$ 0