Long-Term Debt and FHLB Stock (Schedule of outstanding principal amounts and related terms of FHLBNY borrowings) (Details) - FHLB $ in Thousands	Sep. 30, 2019 USD ($)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 47,936
Rate	2.56%
Due in one year	$ 15,621
Long term	32,315
2 year amortizing on May 15, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 1,908
Rate	2.78%
Due in one year	$ 1,908
Long term	0
2 year amortizing on June 8, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 2,117
Rate	2.76%
Due in one year	$ 2,117
Long term	0
2 year amortizing on May 17, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 8,777
Rate	2.53%
Due in one year	$ 4,968
Long term	3,809
Two year bullet on May 17, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 10,000
Rate	2.46%
Due in one year	$ 0
Long term	10,000
3 year amortizing on May 17, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 5,939
Rate	2.92%
Due in one year	$ 3,357
Long term	2,582
3 year amortizing on May 16, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 9,195
Rate	2.49%
Due in one year	$ 3,271
Long term	5,924
3 year bullet on May 16, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 10,000
Rate	2.44%
Due in one year	$ 0
Long term	$ 10,000

Amount of advances from the Federal Home Loan Bank (FHLB).

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The current portion of Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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