Note 10 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets
Allowance for credit losses	$ 23,973	$ 26,901
Depreciation	65	0
Pension actuarial losses	897	1,269
New Jersey net operating loss	1,187	156
Deferred compensation	5,240	3,784
Unrealized losses on available-for-sale securities	23,365	25,141
Deferred loan costs, net of fees	1,628	2,664
Finance lease	192	212
Nonaccrual interest	111	168
Operating lease liability	3,897	3,424
Other	1,887	4,172
Total deferred tax assets	62,442	67,891
Deferred tax liabilities
Employee benefit plans	(2,439)	(2,452)
Purchase accounting	(1,660)	(1,458)
Depreciation	0	(381)
Prepaid expenses	(1,386)	(1,011)
Unrealized gains on derivatives	(10,676)	(13,704)
Right of use asset	(3,545)	(3,059)
Other	(1,664)	(1,681)
Total deferred tax liabilities	(21,370)	(23,746)
Net deferred tax assets	$ 41,072	$ 44,145