Consolidated Statements of Comprehensive Loss - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss		$ (2,344,000)	$ (1,825,000)	$ (5,183,000)	$ (3,034,000)
Unrealized gain (loss) on securities available-for-sale:
Unrealized gain (loss) arising during the period		361,000	(3,800,000)	(748,000)	239,000
Unrealized gain (loss) on securities available-for-sale:		361,000	(3,800,000)	(748,000)	239,000
Unrealized gain (loss) on cash flow hedge:
Unrealized gain arising during the period		(1,685,000)	5,149,000	(521,000)	3,709,000
Reclassification adjustment for loss (gain) included in net loss		1,613,000	(1,346,000)	3,262,000	(2,350,000)
Unrealized gain (loss) on cash flow hedge:		(72,000)	3,803,000	2,741,000	1,359,000
Post-retirement plans:
Reclassification adjustment for amortization of: Net actuarial loss (gain)		3,000	(2,000)	4,000	(4,000)
Unrealized loss (gain) on post-retirement plans		3,000	(2,000)	4,000	(4,000)
Total other comprehensive income, net of tax	[1]	292,000	1,000	1,997,000	1,594,000
Comprehensive loss		$ (2,052,000)	$ (1,824,000)	$ (3,186,000)	$ (1,440,000)

[1] Reflects deferred tax valuation allowance.