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Goodwill and Other Intangible Assets - Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Goodwill
Gross Carrying Amount	$ 43,346		$ 43,346		$ 47,139
Accumulated Amortization	(20,753)		(20,753)		(21,220)
Total	22,593		22,593		25,919
Intangible amortization expense	1,088	$ 990	3,327	$ 2,971
Goodwill, Impairment Loss			0
Identifiable customer intangibles
Goodwill
Gross Carrying Amount	43,346		43,346		43,346
Accumulated Amortization	(20,753)		(20,753)		(17,490)
Total	$ 22,593		$ 22,593		25,856
Core deposit intangible assets
Goodwill
Gross Carrying Amount					3,793
Accumulated Amortization					(3,730)
Total					$ 63