Note 3 - Investments in Securities (Tables)

3 Months Ended

Mar. 31, 2026

Debt Securities, Available-for-Sale [Table Text Block]

			*Gross*		*Gross*			*Allowance*
	*Amortized*		*Unrealized*		*Unrealized*			*for Credit*		*Fair*
Available-for-sale	*Cost*		*Gains*		*Losses*			*Losses*		*Value*
	(in thousands)
March 31, 2026
Mortgage-backed securities	$	6,316	$	25	$	(4	)	$	—	$	6,337
Collateralized mortgage obligations		12,271		12		(48	)		—		12,235
Corporate bonds		18,233		294		(33	)		—		18,494
Total available-for-sale securities	$	36,820	$	331	$	(85	)	$	—	$	37,066

December 31, 2025
Mortgage-backed securities	$	6,411	$	51	$	(3	)	$	—	$	6,459
Collateralized mortgage obligations		10,937		48		(37	)		—		10,948
Corporate bonds		16,732		225		(47	)		—		16,910
Total available-for-sale securities	$	34,080	$	324	$	(87	)	$	—	$	34,317

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

			*Less than 12 Months*					*12 Months or Longer*					*Total*
	*# of*		*Fair*		*Unrealized*			*Fair*		*Unrealized*			*Fair*		*Unrealized*
	*Holdings*		*Value*		*Losses*			*Value*		*Losses*			*Value*		*Losses*
								(Dollars in thousands)
March 31, 2026
Available-for-Sale:
Mortgage-backed securities		1	$	—	$	—		$	1,356	$	(4	)	$	1,356	$	(4	)
Collateralized mortgage obligations		6		8,174		(30	)		1,407		(18	)		9,581		(48	)
Corporate bonds		1		2,646		(33	)		—		—			2,646		(33	)
Total		8	$	10,820	$	(63	)	$	2,763	$	(22	)	$	13,583	$	(85	)

December 31, 2025
Available-for-Sale:
Mortgage-backed securities		1	$	—	$	—		$	1,362	$	(3	)	$	1,362	$	(3	)
Collateralized mortgage obligations		3		3,778		(15	)		1,405		(22	)		5,183		(37	)
Corporate bonds		4		7,666		(47	)		—		—			7,666		(47	)
Total		8	$	11,444	$	(62	)	$	2,767	$	(25	)	$	14,211	$	(87	)

Debt Securities, Held-to-Maturity [Table Text Block]

			*Gross*		*Gross*			*Allowance*
	*Amortized*		*Unrealized*		*Unrealized*			*for Credit*		*Fair*
Held-to-maturity:	*Cost*		*Gains*		*Losses*			*Losses*		*Value*
	(in thousands)
March 31, 2026
Mortgage-backed securities	$	35,492	$	37	$	(3,465	)	$	—	$	32,064
Corporate bonds		16,132		200		(352	)		—		15,980
Total held-to-maturity securities	$	51,624	$	237	$	(3,817	)	$	—	$	48,044

December 31, 2025
Mortgage-backed securities		36,645		88		(3,453	)		—		33,280
Corporate bonds		19,119		262		(335	)		—		19,046
Total held-to-maturity securities	$	55,764	$	350	$	(3,788	)	$	—	$	52,326

Investments Classified by Contractual Maturity Date [Table Text Block]

	*Available-for-sale*		*Held-to-maturity*
	*Fair*		*Amortized*		*Fair*
	*Value*		*Cost*		*Value*
	(in thousands)
Within 1 year	$	6,955	$	6,038	$	6,034
After 1 year through 5 years		4,189		8,017		8,052
After 5 years through 10 years		12,895		11,715		10,960
After 10 years		13,027		25,854		22,998
Total	$	37,066	$	51,624	$	48,044

- Definition

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

+ References

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+ Details

- Definition

Tabular disclosure of information about investment in debt security measured at amortized cost (held-to-maturity).

+ References

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+ Details

ECB Bancorp, Inc. /MD/ 10-Q