Goodwill and Intangible Assets - Change in Goodwill (Details) - USD ($) $ in Thousands	7 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Balance, beginning of period		$ 65,614	$ 66,087
Balance, end of the period	$ 74,930	74,930	65,614
Foothills Bancorp, Inc. [Member]
Goodwill [Roll Forward]
Adjustment to values initially recorded for acquisitions		0	(473)
Progressive Financial Group Inc. [Member]
Goodwill [Roll Forward]
Adjustment to values initially recorded for acquisitions	(231)	1,014	0
Acquisition of PFG		8,302	$ 0
Balance, end of the period	$ 9,316	$ 9,316

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 45
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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