Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Cash Flows From Operating Activities:
Net income (loss)	$ 5,932,000	$ 2,452,000	$ (571,000)	$ (1,213,000)	$ 8,384,000	$ (1,784,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Amortization of premiums/discounts on securities, net					25,000	25,000
Gain on sale of loans					(171,000)
Gain on sale of real property					(4,839,000)
Gain on derivatives					(283,000)
Provision for loan losses (Note 5)	586,000		271,000		1,272,000	1,417,000	$ 2,443,000
Depreciation and amortization	636,424		624,684		1,239,000	1,226,000
ESOP compensation					330,000	247,000
Share-based compensation expense					704,000	698,000
Deferred income taxes					(873,000)	(640,000)
Changes in assets and liabilities:
Decrease in mortgage loans held for sale, fair value					19,064,000
Increase in accrued interest receivable					(1,738,000)	(3,695,000)
Decrease (increase) in other assets					7,027,000	(4,203,000)
Decrease in accrued interest payable					(5,000)	(49,000)
Increase (decrease) in advance payments by borrowers					663,000	(341,000)
Decrease in mortgage loan funding payable					(740,000)
(Decrease) increase in other liabilities					(1,696,000)	3,232,000
Net cash provided by (used in) operating activities					28,363,000	(3,867,000)
Cash Flows From Investing Activities:
Proceeds from redemption of FHLBNY stock					947,000	4,109,000
Purchases of FHLBNY Stock					(677,000)	(4,796,000)
Purchases of available-for-sale securities					(35,237,000)	(9,130,000)
Proceeds from sale of available-for-sale securities					2,641,000
Proceeds from maturities, calls and principal repayments on available-for-sale securities					1,531,000	16,955,000
Proceeds from sales of loans					4,030,000	3,530,000
Net increase in loans					(194,013,000)	(121,627,000)
Proceeds from sale of real property					8,152,000
Purchases of premises and equipment					(6,564,000)	(582,000)
Net cash used in investing activities					(219,190,000)	(111,541,000)
Cash Flows From Financing Activities:
Net increase in deposits					206,582,000	154,176,000
Repurchase of treasury stock					(1,607,000)	(2,694,000)
Proceeds from the sale of treasury stock					4,743,000
Proceeds from advances from FHLBNY					11,500,000	179,130,000
Repayments of advances from FHLBNY					(19,500,000)	(166,250,000)
Net advances on warehouse lines of credit					(16,877,000)
Net cash provided by financing activities					184,841,000	164,362,000
Net (decrease) increase in cash and cash equivalents					(5,986,000)	48,954,000
Cash and Cash Equivalents including restricted cash:
Beginning		$ 72,078,000		$ 27,677,000	72,078,000	27,677,000	27,677,000
Ending	$ 66,092,000		$ 76,631,000		66,092,000	76,631,000	$ 72,078,000
Supplemental disclosures of cash flow information:
Cash paid for interest on deposits and borrowings					4,402,000	6,028,000
Cash paid for income taxes					$ 2,288,000	$ 91,000