Business Combinations - Allocation of Purchase Price (Details) - USD ($) $ in Thousands		7 Months Ended	9 Months Ended	12 Months Ended
	Mar. 01, 2020	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Consideration transferred:
Goodwill		$ 74,930	$ 74,930	$ 65,614	$ 66,087
Progressive Financial Group Inc. [Member]
Assets:
Cash & cash equivalents	$ 55,971	55,971	55,971
Investment securities available-for-sale	27,054	27,257	27,257
Restricted investments	692	692	692
Loans	191,672	187,981	187,981
Allowance for loan losses	(2,832)	0	0
Premises and equipment, net	15,681	12,762	12,762
Bank owned life insurance	5,560	5,560	5,560
Deferred tax asset, net	0	1,173	1,173
Intangibles	0	1,370	1,370
Other real estate owned	3,695	2,221	2,221
Interest Receivable	1,061	781	781
Prepaids	375	201	201
Goodwill	231	0	0
Other assets	1,881	1,881	1,881
Total assets acquired	301,041	297,850	297,850
Liabilities:
Deposits	271,276	271,276	271,276
Time deposit premium	0	729	729
Payables and other liabilities	776	776	776
Total liabilities assumed	272,052	272,781	272,781
Excess of assets assumed over liabilities assumed	28,989	25,069	25,069
Consideration transferred:
Cash	$ 9,800	9,838
Common stock issued (1,292,578 shares)		24,547
Common stock issued (in shares)	1,292,578
Total fair value of consideration transferred	$ 34,385
Goodwill	$ 9,300	9,316	9,316
Assets:
Cash & cash equivalents		0
Investment securities available-for-sale		203
Restricted investments		0
Loans		(3,691)
Allowance for loan losses		2,832
Premises and equipment, net		(2,919)
Bank owned life insurance		0
Deferred tax asset, net		1,173
Intangibles		1,370
Other real estate owned		(1,474)
Interest Receivable		(280)
Prepaids		(174)
Goodwill		(231)	$ 1,014	$ 0
Other assets		0
Total assets acquired		(3,191)
Liabilities:
Deposits		0
Time deposit premium		729
Payables and other liabilities		0
Total liabilities assumed		729
Aggregate fair value adjustments		$ (3,920)