Available-for-sale securities (Details 2) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Available-for-sale securities [Abstract]
Cost	$ 10,954	$ 11,109	$ 11,278
Gross Unrealized Gains	0	51	93
Gross Unrealized Losses	865	58	39
Fair Value	10,089	11,102	11,332
Mortgage-backed securities
Available-for-sale securities [Abstract]
Cost	8,486	8,702	8,597
Gross Unrealized Gains	0	51	93
Gross Unrealized Losses	783	47	11
Fair Value	7,703	8,706	8,679
U.S. Treasury securities
Available-for-sale securities [Abstract]
Cost	2,468	2,407	2,681
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	82	11	28
Fair Value	$ 2,386	$ 2,396	$ 2,653

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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