Goodwill and Intangibles - Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Summary
Gross Carrying Amount	$ 4,011,000	$ 4,011,000	$ 5,581,000
Accumulated Amortization	(2,825,000)	(2,304,000)	(3,298,000)
Total	$ 1,186,000	1,707,000	2,283,000
Licenses
Intangible assets
Amortization period	84 months
Summary
Gross Carrying Amount	$ 1,370,000	1,370,000	1,370,000
Accumulated Amortization	(1,052,000)	(856,000)	(661,000)
Total	$ 318,000	514,000	709,000
Trade names
Intangible assets
Amortization period	120 months
Summary
Gross Carrying Amount	$ 224,000	224,000	224,000
Accumulated Amortization	(120,000)	(98,000)	(75,000)
Total	$ 104,000	126,000	149,000
Customer list
Intangible assets
Amortization period	21 months
Summary
Gross Carrying Amount			1,570,000
Accumulated Amortization			(1,570,000)
Core deposit intangible
Intangible assets
Amortization period	10 years
Summary
Gross Carrying Amount	$ 2,417,000	2,417,000	2,417,000
Accumulated Amortization	(1,653,000)	(1,350,000)	(992,000)
Total	$ 764,000	1,067,000	1,425,000
NattyMac, LLC | Customer list
Intangible assets
Amortization period	21 months
Summary
Total	$ 1,600,000	1,600,000	1,600,000
FMNBP | Core deposit intangible
Intangible assets
Amortization period	10 years
Amortization of intangible assets		250,000	294,000	$ 326,000
FMBI | Core deposit intangible
Intangible assets
Amortization period	10 years
Amortization of intangible assets	$ 53,000	64,000	75,000
MCS
Intangible assets
Amortization of intangible assets	$ 218,000	$ 218,000	$ 218,000