Acquisition of CFBanc Corporation (Details) $ / shares in Units, $ in Thousands				3 Months Ended	12 Months Ended
	Apr. 06, 2021 $ / shares shares	Apr. 06, 2021 USD ($) $ / shares shares	Apr. 02, 2021 $ / shares	Mar. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares
Unaudited pro forma information [Abstract]
Net interest income | $				$ 5,633	$ 23,781
Net income | $				$ (3,873)	$ 1,571
Basic earnings per share (in dollars per share) | $ / shares				$ (0.07)	$ 0.03
Diluted earnings per share (in dollars per share) | $ / shares				$ (0.07)	0.03
Common Stock Issued by Class [Abstract]
Shares outstanding (in shares)	27,898,894
Shares outstanding (in shares)				27,898,894
Subsequent Event [Member]
Common Stock Issued by Class [Abstract]
Shares issued in merger (in shares)	25,404,491
Shares exchanged post-merger (in shares)	0
Shares cancelled (in shares)	(52,105)
Shares issued in private placements (in shares)	18,474,000
Shares outstanding (in shares)	71,725,280	71,725,280
Subsequent Event [Member] | Private Placement [Member]
Acquisition [Abstract]
Purchase price of common stock (in dollars per share) | $ / shares	$ 1.78	$ 1.78
Aggregate purchase price | $		$ 32,900
Common Stock Voting [Member]
Acquisition [Abstract]
Common stock, par value (in dollars per share) | $ / shares				$ 0.01	0.01
Common Stock Voting [Member] | Subsequent Event [Member]
Acquisition [Abstract]
Common stock, par value (in dollars per share) | $ / shares			$ 0.01
Share conversion ratio			13.626
Common Stock Non-Voting [Member]
Acquisition [Abstract]
Common stock, par value (in dollars per share) | $ / shares				$ 0.01	$ 0.01
Common Stock Non-Voting [Member] | Subsequent Event [Member]
Acquisition [Abstract]
Common stock, par value (in dollars per share) | $ / shares			$ 0.01
Series A Preferred Stock [Member] | Subsequent Event [Member]
Acquisition [Abstract]
Share conversion ratio			1
Voting Class A Common Stock [Member]
Common Stock Issued by Class [Abstract]
Shares outstanding (in shares)	19,142,498
Shares outstanding (in shares)				19,142,498
Voting Class A Common Stock [Member] | Subsequent Event [Member]
Common Stock Issued by Class [Abstract]
Shares issued in merger (in shares)	13,999,870
Shares exchanged post-merger (in shares)	(681,300)
Shares cancelled (in shares)	(52,105)
Shares issued in private placements (in shares)	11,221,921
Shares outstanding (in shares)	43,630,884	43,630,884
Nonvoting Class B Common Stock [Member]
Common Stock Issued by Class [Abstract]
Shares outstanding (in shares)	0
Shares outstanding (in shares)				0
Nonvoting Class B Common Stock [Member] | Subsequent Event [Member]
Common Stock Issued by Class [Abstract]
Shares issued in merger (in shares)	11,404,621
Shares exchanged post-merger (in shares)	0
Shares cancelled (in shares)	0
Shares issued in private placements (in shares)	0
Shares outstanding (in shares)	11,404,621	11,404,621
Nonvoting Class C Common Stock [Member]
Common Stock Issued by Class [Abstract]
Shares outstanding (in shares)	8,756,396
Shares outstanding (in shares)				8,756,396
Nonvoting Class C Common Stock [Member] | Subsequent Event [Member]
Common Stock Issued by Class [Abstract]
Shares issued in merger (in shares)	0
Shares exchanged post-merger (in shares)	681,300
Shares cancelled (in shares)	0
Shares issued in private placements (in shares)	7,252,079
Shares outstanding (in shares)	16,689,775	16,689,775
CFBanc Corporation [Member] | Common Class A [Member]
Acquisition [Abstract]
Common stock, par value (in dollars per share) | $ / shares				$ 0.50
CFBanc Corporation [Member] | Common Class B [Member]
Acquisition [Abstract]
Common stock, par value (in dollars per share) | $ / shares				0.50
CFBanc Corporation [Member] | Series B Preferred Stock [Member]
Acquisition [Abstract]
Common stock, par value (in dollars per share) | $ / shares				$ 0.50