Contingent Liabilities, Commitments, and Financial Instruments with Off-Balance-Sheet Risk (Details 2) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) Rate	Dec. 31, 2020 USD ($) Rate	Dec. 31, 2019 USD ($) Rate
Commitments and Contingencies Disclosure [Abstract]
Operating lease cost	$ 3,480	$ 3,472	$ 3,487
Short-term lease cost	20	8	41
Recovery of variable lease cost		(30)
Variable lease cost	0		0
Total operating lease cost	3,500	3,450	$ 3,528
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2022	3,852
2023	3,909
2024	2,965
2025	2,702
2026	2,504
Thereafter	6,943
Total lease payments	22,875
Imputed interest	(1,511)
Operating lease liabilities	$ 21,364	$ 23,688
Weighted average remaining lease term	9 years 3 months 21 days	10 years 2 months 1 day	10 years 10 months 17 days
Weighted average discount rate \| Rate	1.75%	1.80%	2.83%
Operating cash flows from operating leases	$ 4,006	$ 3,794	$ 3,768
Net gain on sale of building with a subsequent operating lease			$ 1,310
Number of significant lessee leases that have not yet commenced	0

Number of significant lessee leases that have not yet commenced as of the end of the reporting period.

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Recovery of variable lease cost

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Amount of lease cost recognized by lessee for lease contract.

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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