Investment Securities - Summary of amortized cost, gross unrealized gains and losses and fair values of available for sale and held to maturity securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Available for sale securities:
Amortized cost	$ 104,098	$ 88,071
Gross unrealized gains	0	2,376
Gross unrealized losses	(9,003)	(249)
Available for sale securities	95,095	90,198
Held to maturity securities:
Amortized cost	16,027	16,043
Gross unrealized gains	50	2,608
Gross unrealized losses	(1,436)	(206)
Fair value	14,641	18,445
U.S. Government and agency obligations
Available for sale securities:
Amortized cost, due from one through five years	45,662	25,747
Gross unrealized gains, due from one through five years	0	3
Gross unrealized losses, due from one through five years	(4,057)	(181)
Fair value, due from one through five years	41,605	25,569
Amortized cost, due from five through ten years	30,897	16,540
Gross unrealized gains, due from five through ten years	0	866
Gross unrealized losses, due from five through ten years	(2,363)	0
Fair value, due from five through ten years	28,534	17,406
Amortized cost, due after ten years	10,539	31,284
Gross unrealized gains, due after ten years	0	988
Gross unrealized losses, due after ten years	(1,241)	(58)
Fair value, due after ten years	9,298	32,214
Amortized cost	87,098	73,571
Gross unrealized gains	0	1,857
Gross unrealized losses	(7,661)	(239)
Available for sale securities	79,437	75,189
Corporate bonds
Available for sale securities:
Amortized cost, due from five through ten years	15,500	13,000
Gross unrealized gains, due from five through ten years	0	429
Gross unrealized losses, due from five through ten years	(1,169)	(10)
Fair value, due from five through ten years	14,331	13,419
Amortized cost, due after ten years	1,500	1,500
Gross unrealized gains, due after ten years	0	90
Gross unrealized losses, due after ten years	(173)	0
Fair value, due after ten years	1,327	1,590
Amortized cost	17,000	14,500
Gross unrealized gains	0	519
Gross unrealized losses	(1,342)	(10)
Available for sale securities	15,658	15,009
State agency and municipal obligations
Held to maturity securities:
Amortized cost, due after ten years	15,990	15,998
Gross unrealized gains, due after ten years	48	2,601
Gross unrealized losses, due after ten years	(1,436)	(206)
Fair Value, due after ten years	14,602	18,393
Government-sponsored mortgage backed securities
Held to maturity securities:
Amortized cost, no contractual maturity	37	45
Gross unrealized gains, no contractual maturity	2	7
Gross unrealized losses, no contractual maturity	0	0
Fair Value, no contractual maturity	$ 39	$ 52