Business Combinations (Identifiable Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jan. 02, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill recognized in the acquisition	$ 35,554		$ 9,387
Ann Arbor Bancorp, Inc
Business Acquisition [Line Items]
Total cash consideration		$ 67,944
Cash and cash equivalents		38,480
Investment securities		47,416
Federal Home Loan Bank stock		923
Loans held for sale		1,703
Loans held for investment		222,356
Premises and equipment		2,404
Core deposit intangibles		3,663
Other assets		8,358
Total assets acquired	325,303	325,303
Deposits		264,820
Federal Home Loan Bank advances		15,279
Other liabilities		3,427
Total liabilities assumed	$ 283,526	283,526
Total identifiable net assets		41,777
Goodwill recognized in the acquisition		$ 26,167

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Federal Home Loan Bank Stock

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Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Loans Held For Investment

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Amount of assets acquired at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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