Acquisition (Schedule of estimated fair values of the assets acquired and liabilities assumed) (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 12, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair value of consideration transferred
Total cash received on acquisition		$ 32,767
Liabilities assumed
Goodwill		$ 2,235	$ 1,410	$ 1,410
Useful life of purchased customer accounts		13 years
ConnectOne Bank
Fair value of consideration transferred
Total cash received on acquisition	$ 32,767
Assets acquired
Fixed assets	113
Reimbursed expenses	9
Core deposit intangible	330
Total assets acquired	452
Liabilities assumed
Deposits	33,863
Mark-to-market adjustment	181
Total liabilities assumed	34,044
Net liabilities acquired	(33,592)
Goodwill	$ 825
ConnectOne Bank | Core deposit
Liabilities assumed
Useful life of purchased customer accounts	13 years