Securities Available for Sale - Summary of Fair Value of Available for Sale Securities and Related Gross Unrealized Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022		Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 28,561		$ 20,962
Gross Unrealized Gains	120		455
Gross Unrealized Losses	(1,591)		(104)
Estimated Fair Value	27,090		21,313
U.S Government sponsored entities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,000		3,000
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(332)		(43)
Estimated Fair Value	2,668		2,957
Municipal- taxable
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	13,829		13,839
Gross Unrealized Gains	111		375
Gross Unrealized Losses	(1,061)		(57)
Estimated Fair Value	12,879		14,157
Municipal- tax exempt
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,365		1,365
Gross Unrealized Gains	4		34
Gross Unrealized Losses	(7)		0
Estimated Fair Value	1,362		1,399
Residential MBS
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	9,510	[1]	1,638
Gross Unrealized Gains	5	[1]	35
Gross Unrealized Losses	(150)	[1]	(4)
Estimated Fair Value	9,365	[1]	1,669
SBA guaranteed debenture
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	857	[2]	1,120
Gross Unrealized Gains	0	[2]	11
Gross Unrealized Losses	(41)	[2]	0
Estimated Fair Value	$ 816	[2]	$ 1,131

[1] Mortgage-backed security

[2] Small Business Administration