Loans - Activity in the Allowance For Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Allowance for loan losses
Beginning balance	$ 45,464	$ 56,548
Provision (recovery) for loan losses	784	(4,289)
Charge offs	(6,478)
Recoveries	66	196
Total ending balance	38,565	52,455
ASU 2016-13
Allowance for loan losses
Beginning balance	(1,651)
ASU 2022-02
Allowance for loan losses
Beginning balance	380
Residential Real Estate
Allowance for loan losses
Beginning balance	27,951	32,202
Provision (recovery) for loan losses	(1,889)	(2,481)
Charge offs	(6,478)
Recoveries	60	190
Total ending balance	20,498	29,911
Residential Real Estate \| ASU 2016-13
Allowance for loan losses
Beginning balance	865
Residential Real Estate \| ASU 2022-02
Allowance for loan losses
Beginning balance	(11)
Commercial Real Estate
Allowance for loan losses
Beginning balance	11,694	12,608
Provision (recovery) for loan losses	3,217	1,096
Recoveries	5	5
Total ending balance	16,067	13,709
Commercial Real Estate \| ASU 2016-13
Allowance for loan losses
Beginning balance	1,151
Construction
Allowance for loan losses
Beginning balance	5,781	11,730
Provision (recovery) for loan losses	(546)	(2,902)
Recoveries	1	1
Total ending balance	1,994	8,829
Construction \| ASU 2016-13
Allowance for loan losses
Beginning balance	(3,633)
Construction \| ASU 2022-02
Allowance for loan losses
Beginning balance	391
Commercial Lines of Credit
Allowance for loan losses
Beginning balance	38	8
Provision (recovery) for loan losses		(2)
Total ending balance		$ 6
Commercial and industrial
Allowance for loan losses
Beginning balance	38
Provision (recovery) for loan losses	2
Total ending balance	6
Commercial and industrial \| ASU 2016-13
Allowance for loan losses
Beginning balance	$ (34)

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount, after recoveries, of loans and leases that have been written-off.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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Amount of expense related to estimated loss from loan and lease transactions.

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