INVESTMENT SECURITIES - Amortized Cost and Market Value of Securities Available for Sale (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Investment Securities
Amortized Cost	$ 171,284,000	$ 173,453,000
Gross Unrealized Gains	11,000	8,000
Gross Unrealized Losses	(26,569,000)	(29,328,000)
Fair Value	144,726,000	144,133,000
Trading securities	0	0
Held to maturity	0	0
Collateralized mortgage obligations
Investment Securities
Amortized Cost	17,090,000	17,596,000
Gross Unrealized Gains	4,000	7,000
Gross Unrealized Losses	(2,217,000)	(2,348,000)
Fair Value	14,877,000	15,255,000
Agency mortgage-backed securities
Investment Securities
Amortized Cost	57,170,000	58,801,000
Gross Unrealized Losses	(6,078,000)	(6,908,000)
Fair Value	51,092,000	51,893,000
Municipal securities
Investment Securities
Amortized Cost	43,067,000	43,092,000
Gross Unrealized Gains	7,000	1,000
Gross Unrealized Losses	(9,641,000)	(10,796,000)
Fair Value	33,433,000	32,297,000
U.S. Government agency securities
Investment Securities
Amortized Cost	45,462,000	45,471,000
Gross Unrealized Losses	(8,283,000)	(8,891,000)
Fair Value	37,179,000	36,580,000
Corporate securities
Investment Securities
Amortized Cost	1,500,000	1,500,000
Gross Unrealized Losses	(185,000)	(175,000)
Fair Value	1,315,000	1,325,000
U.S. Treasury securities
Investment Securities
Amortized Cost	6,995,000	6,993,000
Gross Unrealized Losses	(165,000)	(210,000)
Fair Value	$ 6,830,000	$ 6,783,000

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, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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