Fair Value (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	$ 605,000	$ 3,300,000
Discount percentage applied to real estate appraised values	15.00%
Discount percentage applied to lot development appraised values	6.00%
Mortgage loan servicing rights	$ 15,792,000	15,264,000	$ 12,210,000	$ 10,070,000
Servicing Asset at Fair Value, Amount	1,700,000	13,500,000
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance	182,000	1,568,000	3,189,000	$ 825,000
MSRs recorded at cost	14,100,000	1,800,000
Valuation Allowance for Impairment of Recognized Servicing Assets, Additions (Deductions) for Expenses (Recoveries)	(1,386,000)	(1,621,000)	2,364,000
Other real estate owned	1,354,000	775,000
Estimated fair value of other real estate owned (OREO)	0
OREO devaluations	11,300,000	32,000	185,000
expense related to other repossessed assets	0	414,000	435,000
Alternative Investment	44,657,000	26,384,000
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	20,300,000	8,400,000
Alternative Investment, income recognized	2,400,000	4,500,000	$ 2,400,000
Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	0	2,750,000
Servicing Asset at Fair Value, Amount	1,717,000	13,482,000
Fair Value, Inputs, Level 3 [Member] | Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	0	2,750,000
Fair Value Measured at Net Asset Value Per Share [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Alternative Investment	$ 24,400,000	$ 18,000,000