Nature of Operations (Details)	12 Months Ended
	Dec. 31, 2021 Office
Nature of Operations
Number of full service banking offices	24
Queens County
Nature of Operations
Number of full service banking offices	9
Nassau County
Nature of Operations
Number of full service banking offices	4
Suffolk County
Nature of Operations
Number of full service banking offices	3
Kings County
Nature of Operations
Number of full service banking offices	5
New York County
Nature of Operations
Number of full service banking offices	3