Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive Income (Loss) ("AOCI") ("AOCL") (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Available for sale securities, before tax amount
Unrealized holding (losses) gains, before tax amount	$ (5,579)	$ 1,421	$ (16,595)	$ (2,502)
Interest rate swaps designated as cash flow hedges, before tax amount
Unrealized holding (losses) gains, before tax amount	(358)	4	(2,058)	(443)
Reclassification adjustment for (losses) income recognized in net income, before tax amount	(391)	(646)	(1,005)	(1,276)
Defined benefit retirement plans, before tax amount
Net change in retirement liability, before tax amount		10		21
Total other comprehensive (loss) income, before tax amount	(6,328)	789	(19,658)	(4,200)
Available for sale securities, tax (expense) or benefit
Unrealized holding (losses) gains,tax (expense) or benefit	1,442	(386)	4,231	650
Interest rate swaps designated as cash flow hedges, tax (expense) or benefit
Unrealized holding (losses) gains, tax (expense) or benefit	101	(1)	575	124
Reclassification adjustment for (losses) income recognized in net income, tax (expense) or benefit	108	180	281	356
Defined benefit retirement plans, tax (expense) or benefit
Net change in retirement liability, tax (expense) or benefit		(3)		(6)
Total other comprehensive (loss) income, tax (expense) or benefit	1,651	(210)	5,087	1,124
Available for sale securities
Unrealized holding (losses) gains, net-of-tax amount	(4,137)	1,035	(12,364)	(1,852)
Interest rate swaps designated as cash flow hedges
Unrealized holding (losses) gains, net-of-tax amount	(257)	3	(1,483)	(319)
Reclassification adjustment for (losses) income realized in net income	(283)	(466)	(724)	(920)
Defined benefit retirement plans
Change in retirement liabilities		7		15
Other comprehensive income (loss) income	$ (4,677)	$ 579	$ (14,571)	$ (3,076)