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Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Servicing asset, remaining amortization	$ 5,895,000		$ 5,895,000
Servicing assets recorded			1,711,000	$ 1,492,000
Amortization of SBA servicing assets			1,605,000	1,231,000
Servicing assets, impairment charge				500,000
SBA loans	424,700,000		424,700,000		$ 395,400,000
Amortization of intangible assets	$ 695,000	$ 928,000	$ 2,437,000	$ 2,961,000
Goodwill impairment					$ 0
First Bank Insurance Services | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total intangible assets						$ 10,200,000
Goodwill						7,400,000
First Bank Insurance Services | Discontinued Operations, Disposed of by Sale | Customer lists
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Finite-lived intangible assets						$ 2,800,000

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Amount classified as goodwill attributable to disposal group held for sale or disposed of.

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