Securities - Amortized Cost to Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available for sale:
Amortized cost	$ 32,549	$ 45,921
Gross unrealized gains	695	814
Gross unrealized losses	(914)	(1,118)
Securities available for sale	32,330	45,617
Equity securities:
Amortized cost	2,112	2,112
Gross unrealized gains	184	0
Gross unrealized losses	(75)	(158)
Estimated fair value	2,221	1,954
U.S. Government sponsored entities
Available for sale:
Amortized cost	0	2,000
Gross unrealized gains	0	3
Gross unrealized losses	0	0
Securities available for sale	0	2,003
State and political subdivisions
Available for sale:
Amortized cost	2,355	2,935
Gross unrealized gains	20	34
Gross unrealized losses	0	0
Securities available for sale	2,375	2,969
Residential mortgage backed securities
Available for sale:
Amortized cost	14,498	16,765
Gross unrealized gains	515	645
Gross unrealized losses	0	0
Securities available for sale	15,013	17,410
Corporate and other securities
Available for sale:
Amortized cost	15,696	24,221
Gross unrealized gains	160	132
Gross unrealized losses	(914)	(1,118)
Securities available for sale	$ 14,942	$ 23,235

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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 equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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