Fair Value (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	$ 3,300,000	$ 3,600,000
Discount percentage applied to real estate appraised values	15.00%
Discount percentage applied to lot development appraised values	6.00%
Mortgage loan servicing rights	$ 15,264,000	12,210,000	$ 10,070,000	$ 10,178,000
Servicing Asset at Fair Value, Amount	13,500,000	12,200,000
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance	1,568,000	3,189,000	825,000	$ 232,000
MSRs recorded at cost	1,800,000	31,000
Valuation Allowance for Impairment of Recognized Servicing Assets, Additions (Deductions) for Expenses (Recoveries)	(1,621,000)	2,364,000	593,000
Other real estate owned	$ 775,000	$ 1,431,000
Percent of OREO held at fair value	100.00%	51.00%
Estimated fair value of other real estate owned (OREO)	$ 800,000	$ 700,000
OREO devaluations	(32,000)	100,000	(200,000)
expense related to other repossessed assets	414,000	435,000	0
Alternative Investment	26,384,000	21,522,000
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	8,400,000	6,200,000
Alternative Investment, income recognized	4,500,000	2,400,000	$ 4,800,000
Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	2,750,000	3,164,000
Servicing Asset at Fair Value, Amount	13,482,000	12,179,000
Fair Value, Inputs, Level 3 [Member] | Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	2,750,000	3,164,000
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	$ 18,000,000	$ 15,400,000