Loans and Allowance for Loan Losses, Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($) Contract	Mar. 31, 2017 USD ($) Contract	Dec. 31, 2017 USD ($)
Financing Receivable, Modifications [Line Items]
TDR's classifications from previously performing loans	$ 11,100		$ 11,800
New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts \| Contract	7	16
Pre-Modification Outstanding Recorded Investment	$ 882	$ 2,118
Post-Modification Outstanding Recorded Investment	$ 882	$ 2,118
Florida [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts \| Contract	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 150
Post-Modification Outstanding Recorded Investment	$ 0	$ 150
Real Estate Mortgage - 1 to 4 Family [Member] \| First Mortgages [Member] \| New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts \| Contract	4	11
Pre-Modification Outstanding Recorded Investment	$ 642	$ 1,947
Post-Modification Outstanding Recorded Investment	$ 642	$ 1,947
Real Estate Mortgage - 1 to 4 Family [Member] \| First Mortgages [Member] \| Florida [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts \| Contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 80
Post-Modification Outstanding Recorded Investment	$ 0	$ 80
Real Estate Mortgage - 1 to 4 Family [Member] \| Home Equity Loans [Member] \| New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts \| Contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 13
Post-Modification Outstanding Recorded Investment	$ 0	$ 13
Real Estate Mortgage - 1 to 4 Family [Member] \| Home Equity Lines of Credit [Member] \| New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts \| Contract	3	4
Pre-Modification Outstanding Recorded Investment	$ 240	$ 158
Post-Modification Outstanding Recorded Investment	$ 240	$ 158
Real Estate Mortgage - 1 to 4 Family [Member] \| Home Equity Lines of Credit [Member] \| Florida [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts \| Contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 70
Post-Modification Outstanding Recorded Investment	$ 0	$ 70

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings in accordance with OCC guidance related to chapter 7 Bankruptcy Loans.

+ References

No definition available.

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+ References

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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