Fair Value Disclosures - Carrying amounts and estimated fair value of our financial instruments (Details) - Non recurring - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value Disclosures
Total assets	$ 5,837	$ 2,311
Carrying Amount | Deposits
Fair Value Disclosures
Financial Liabilities	1,365,634	1,121,955
Carrying Amount | Borrowings
Fair Value Disclosures
Financial Liabilities	64,000
Carrying Amount | FHLB of New York advances
Fair Value Disclosures
Financial Liabilities		21,000
Carrying Amount | Cash and cash equivalents
Fair Value Disclosures
Total assets	106,723	95,308
Carrying Amount | Certificates of deposit
Fair Value Disclosures
Total assets	100	100
Carrying Amount | Marketable equity securities
Fair Value Disclosures
Total assets	17,714	18,041
Carrying Amount | Securities available for sale
Fair Value Disclosures
Total assets		1
Carrying Amount | Securities held to maturity
Fair Value Disclosures
Total assets	15,524	26,395
Carrying Amount | Loans receivable, net
Fair Value Disclosures
Total assets	1,503,403	1,212,219
Carrying Amount | Investments in restricted stock
Fair Value Disclosures
Total assets	929	1,238
Carrying Amount | Accrued interest receivable
Fair Value Disclosures
Total assets	11,323	8,597
Fair Value | Deposits
Fair Value Disclosures
Financial Liabilities	1,360,276	1,121,107
Fair Value | Borrowings
Fair Value Disclosures
Financial Liabilities	62,707
Fair Value | FHLB of New York advances
Fair Value Disclosures
Financial Liabilities		19,437
Fair Value | Cash and cash equivalents
Fair Value Disclosures
Total assets	106,723	95,308
Fair Value | Certificates of deposit
Fair Value Disclosures
Total assets	100	100
Fair Value | Marketable equity securities
Fair Value Disclosures
Total assets	17,714	18,041
Fair Value | Securities available for sale
Fair Value Disclosures
Total assets		1
Fair Value | Securities held to maturity
Fair Value Disclosures
Total assets	11,909	22,865
Fair Value | Loans receivable, net
Fair Value Disclosures
Total assets	1,473,766	1,191,483
Fair Value | Investments in restricted stock
Fair Value Disclosures
Total assets	929	1,238
Fair Value | Accrued interest receivable
Fair Value Disclosures
Total assets	11,323	8,597
Level 1 | Fair Value | Cash and cash equivalents
Fair Value Disclosures
Total assets	106,723	95,308
Level 1 | Fair Value | Marketable equity securities
Fair Value Disclosures
Total assets	17,714	18,041
Level 2 | Fair Value | Deposits
Fair Value Disclosures
Financial Liabilities	1,360,276	1,121,107
Level 2 | Fair Value | Borrowings
Fair Value Disclosures
Financial Liabilities	62,707
Level 2 | Fair Value | FHLB of New York advances
Fair Value Disclosures
Financial Liabilities		19,437
Level 2 | Fair Value | Certificates of deposit
Fair Value Disclosures
Total assets	100	100
Level 2 | Fair Value | Securities available for sale
Fair Value Disclosures
Total assets		1
Level 2 | Fair Value | Securities held to maturity
Fair Value Disclosures
Total assets	11,909	22,865
Level 2 | Fair Value | Investments in restricted stock
Fair Value Disclosures
Total assets	929	1,238
Level 2 | Fair Value | Accrued interest receivable
Fair Value Disclosures
Total assets	11,323	8,597
Level 3
Fair Value Disclosures
Total assets	5,837	2,311
Level 3 | Fair Value | Loans receivable, net
Fair Value Disclosures
Total assets	$ 1,473,998	$ 1,191,483