Loans Receivable and Allowance for Loan Losses (TDR Mortgage Loans Receivable) (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 mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	19	12	30	28
Pre- Modification Recorded Investment	$ 8,101	$ 3,005	$ 11,290	$ 11,688
Recorded investment	$ 8,041	$ 2,993	$ 11,202	$ 11,572
Residential Mortgage Loans \| Full documentation interest-only
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	3	4	7	8
Pre- Modification Recorded Investment	$ 1,947	$ 1,315	$ 2,836	$ 3,350
Recorded investment	$ 1,943	$ 1,309	$ 2,829	$ 3,340
Residential Mortgage Loans \| Full documentation amortizing
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	11	5	13	11
Pre- Modification Recorded Investment	$ 4,274	$ 1,142	$ 4,865	$ 3,201
Recorded investment	$ 4,264	$ 1,136	$ 4,852	$ 3,126
Residential Mortgage Loans \| Reduced documentation interest-only
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	1	1	3	5
Pre- Modification Recorded Investment	$ 498	$ 209	$ 1,212	$ 1,896
Recorded investment	$ 489	$ 209	$ 1,196	$ 1,903
Residential Mortgage Loans \| Reduced documentation amortizing
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	2	2	5	2
Pre- Modification Recorded Investment	$ 529	$ 339	$ 1,524	$ 339
Recorded investment	$ 526	$ 339	$ 1,506	$ 339
Multi-Family
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	1	0	1	0
Pre- Modification Recorded Investment	$ 338	$ 0	$ 338	$ 0
Recorded investment	$ 332	$ 0	$ 332	$ 0
Commercial Real Estate
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans \| loan	1	0	1	2
Pre- Modification Recorded Investment	$ 515	$ 0	$ 515	$ 2,902
Recorded investment	$ 487	$ 0	$ 487	$ 2,864

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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=49124121&loc=SL6953676-111524

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