Securities - Amortized Cost and Estimated Fair Value of Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Securities available-for-sale:
Amortized Cost	$ 336,317	$ 99,359
Gross Unrealized Gains	226	2,893
Gross Unrealized (Losses)	(4,414)
Estimated Fair Value	332,129	102,252
Agency mortgage-backed securities
Securities available-for-sale:
Amortized Cost	251,365	99,359
Gross Unrealized Gains	224	2,893
Gross Unrealized (Losses)	(1,463)
Estimated Fair Value	250,126	$ 102,252
U.S. Treasury
Securities available-for-sale:
Amortized Cost	84,952
Gross Unrealized Gains	2
Gross Unrealized (Losses)	(2,951)
Estimated Fair Value	$ 82,003

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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