Loans Receivable and Allowance for Loan Losses (Details 10) (Mortgage Loans (Gross), USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014 item	Jun. 30, 2013 item	Jun. 30, 2014 item	Jun. 30, 2013 item
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans	13	22	35	47
Pre-Modification Recorded Investment	$ 4,829	$ 8,477	$ 12,907	$ 18,910
Recorded Investment	4,824	8,395	12,253	18,275
Residential Mortgage Loans | Full documentation interest-only loans
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans	7	6	18	11
Pre-Modification Recorded Investment	2,940	1,296	7,797	2,451
Recorded Investment	2,939	1,295	7,374	2,450
Residential Mortgage Loans | Full documentation amortizing loans
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans		3	3	5
Pre-Modification Recorded Investment		721	519	1,501
Recorded Investment		718	489	1,506
Residential Mortgage Loans | Reduced documentation interest-only loans
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans	4	8	8	19
Pre-Modification Recorded Investment	1,278	2,702	2,301	6,135
Recorded Investment	1,277	2,702	2,290	6,111
Residential Mortgage Loans | Reduced documentation amortizing loans
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans		3	2	6
Pre-Modification Recorded Investment		1,342	317	2,084
Recorded Investment		1,321	262	2,045
Multi-Family
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans	1		2	3
Pre-Modification Recorded Investment	357		1,060	2,784
Recorded Investment	357		946	2,465
Commercial Real Estate
Information about mortgage loans receivable by segment and class modified in troubled debt restructuring
Number of Loans	1	2	2	3
Pre-Modification Recorded Investment	254	2,416	913	3,955
Recorded Investment	$ 251	$ 2,359	$ 892	$ 3,698