Long-Term Debt and FHLB Stock (Schedule of outstanding principal amounts and related terms of FHLBNY borrowings) (Details) - Federal Home Loan Bank of New York ("FHLBNY") $ in Thousands	Mar. 31, 2020 USD ($)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 79,645
Rate	2.55%
Due in one year	$ 43,176
Long term	36,469
1 month bullet on April 13, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 15,000
Rate	0.91%
Due in one year	$ 15,000
Long term	0
1 year bullet on February 1, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 10,000
Rate	0.80%
Due in one year	$ 10,000
Long term	0
2 year amortizing on May 15, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 640
Rate	2.78%
Due in one year	$ 640
Long term	0
2 year amortizing on June 8, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 853
Rate	2.76%
Due in one year	$ 853
Long term	0
2 year amortizing on May 17, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 6,309
Rate	2.53%
Due in one year	$ 5,031
Long term	1,277
2 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	$ 4,273
Rate	2.92%
Due in one year	$ 3,406
Long term	867
3 year amortizing on May 16, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 7,570
Rate	2.49%
Due in one year	$ 3,312
Long term	4,259
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
3 year amortizing February 28, 2023
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 15,000
Rate	1.32%
Due in one year	$ 4,934
Long term	$ 10,066

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

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-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
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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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Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank).

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

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