Reclassification of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Supplemental Comprehensive Income Disclosures [Abstract]
Unrealized holding gains on securities arising during the period	$ 1,707	$ 5,822	$ (14,097)	$ 25,325
Reclassification adjustment for gains on securities included in net income	(10)	(8)	(16)	(27)
Total unrealized gains on securities	1,697	5,814	(14,113)	25,298
Unrealized holding gains (losses) on derivatives arising during the period	(537)	(536)	1,305	(5,117)
Unrealized holding gains on securities arising during the period	(358)	(1,223)	2,961	(5,319)
Reclassification adjustment for gains on derivatives included in net income, before Tax	0	0	0	0
Total unrealized gain on derivatives	(537)	(536)	1,305	(5,117)
Reclassification adjustment for gains on securities included in net income	2	2	3	6
Total other comprehensive (loss) income	1,160	5,278	(12,808)	20,181
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	(356)	(1,221)	2,964	(5,313)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	113	113	(274)	1,075
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Total	113	113	(274)	1,075
Other Comprehensive Income (Loss), Tax	(243)	(1,108)	2,690	(4,238)
Other comprehensive income (loss) before reclassification adjustment	1,349	4,599	(11,136)	20,006
Total unrealized (losses) gains on securities	1,341	4,593	(11,149)	19,985
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(424)	(423)	1,031	(4,042)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Total	(424)	(423)	1,031	(4,042)
Total other comprehensive (loss) income	917	4,170	(10,118)	15,943
Reclassification adjustment for gains on securities included in net income	8	6	13	21
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	7,115		7,115		$ 17,233
Other comprehensive income (loss) before reclassification adjustment	1,349	4,599	(11,136)	20,006
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(424)	(423)	1,031	(4,042)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	(537)	(536)	1,305	(5,117)
Other comprehensive income (loss)	917	4,170	(10,118)	15,943
Unrealized holding (losses) gains on securities arising during the period	1,707	5,822	(14,097)	25,325
Unrealized holding gains on securities arising during the period	(358)	(1,223)	2,961	(5,319)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	10	8	16	27
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	(2)	(2)	(3)	(6)
Reclassification adjustment for gains on securities included in net income	8	6	13	21
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	1,697	5,814	(14,113)	25,298
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	(356)	(1,221)	2,964	(5,313)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	1,341	4,593	(11,149)	19,985
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(537)	(536)	1,305	(5,117)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	113	113	(274)	1,075
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	113	113	(274)	1,075
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(424)	(423)	1,031	(4,042)
Other Comprehensive Income (Loss), before Tax	1,160	5,278	(12,808)	20,181
Other Comprehensive Income (Loss), Tax	(243)	(1,108)	2,690	(4,238)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Other comprehensive income (loss) before reclassification adjustment	1,349	4,599	(11,136)	20,006
Total other comprehensive (loss) income	1,341	4,593	(11,149)	19,985
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	9,161	24,565	9,161	24,565	20,310	$ 4,580
Other comprehensive income (loss) before reclassification adjustment	1,349	4,599	(11,136)	20,006
Amounts reclassified from accumulated other comprehensive income (loss)	(8)	(6)	(13)	(21)
Other comprehensive income (loss)	1,341	4,593	(11,149)	19,985
Accumulated Defined Benefit Plans Adjustment [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Other comprehensive income (loss) before reclassification adjustment	0	0	0	0
Total other comprehensive (loss) income	0	0	0	0
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(182)	365	(182)	365	(182)	365
Other comprehensive income (loss) before reclassification adjustment	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Other comprehensive income (loss)	0	0	0	0
Derivative [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	(424)	(423)	1,031	(4,042)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,864)	(3,408)	(1,864)	(3,408)	(2,895)	634
Other comprehensive income (loss)	(424)	(423)	1,031	(4,042)
Accumulated Other Comprehensive Income (Loss), net [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	917	4,170	(10,118)	15,943
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	7,115	21,522	7,115	21,522	$ 17,233	$ 5,579
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	925	4,176	(10,105)	15,964
Amounts reclassified from accumulated other comprehensive income (loss)	(8)	(6)	(13)	(21)
Other comprehensive income (loss)	$ 917	$ 4,170	$ (10,118)	$ 15,943