Loans Receivable and Allowance for Loan Losses (TDR Mortgage Loans, Subsequent Payment Default) (Details) - Mortgage Loans $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016 USD ($) loan	Jun. 30, 2015 USD ($) loan	Jun. 30, 2016 USD ($) loan	Jun. 30, 2015 USD ($) loan
Information about loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	14	11	15	12
Recorded Investment \| $	$ 3,824	$ 5,347	$ 4,399	$ 5,805
Residential Mortgage Loans \| Full documentation interest-only
Information about loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	3	4	3	4
Recorded Investment \| $	$ 1,084	$ 1,957	$ 1,084	$ 1,957
Residential Mortgage Loans \| Full documentation amortizing
Information about loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	9	1	9	2
Recorded Investment \| $	$ 2,345	$ 387	$ 2,345	$ 845
Residential Mortgage Loans \| Reduced documentation interest-only
Information about loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	2	4	3	4
Recorded Investment \| $	$ 395	$ 1,967	$ 970	$ 1,967
Multi-Family
Information about loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	0	2	0	2
Recorded Investment \| $	$ 0	$ 1,036	$ 0	$ 1,036

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524

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Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

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