Loans Receivable and Allowance for Loan Losses - Aging Analysis by Accruing and Non-accrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	$ 199,875	$ 170,673
Current	10,911,852	11,739,049
Total	11,111,727	11,909,722
deferred loan origination costs	41,354	47,726
Loans receivable	11,153,081	11,957,448
Allowance for loan losses	(98,000)	(111,600)	$ (139,000)	$ (145,501)
Loans receivable, net	11,055,081	11,845,848
Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	105,861	104,042
Current	10,867,982	11,681,961
Total	10,973,843	11,786,003
Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	94,014	66,631
Current	43,870	57,088
Total	137,884	123,719
Consumer and other loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	9,968	9,432
Current	242,725	239,936
Total	252,693	249,368
Allowance for loan losses	(6,288)	(8,825)	(8,824)	(6,316)
Consumer and other loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,860	3,392
Current	242,725	239,936
Total	245,585	243,328
Consumer and other loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	7,108	6,040
Current	0	0
Total	7,108	6,040
Consumer and other loans (gross) | Home equity and other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	9,265	9,432
Current	151,554	175,121
Total	160,819	184,553
Consumer and other loans (gross) | Home equity and other consumer | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,860	3,392
Current	151,554	175,121
Total	154,414	178,513
Consumer and other loans (gross) | Home equity and other consumer | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	6,405	6,040
Current	0	0
Total	6,405	6,040
Consumer and other loans (gross) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	703	0
Current	91,171	64,815
Total	91,874	64,815
Consumer and other loans (gross) | Commercial and industrial | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
Current	91,171	64,815
Total	91,171	64,815
Consumer and other loans (gross) | Commercial and industrial | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	703	0
Current	0	0
Total	703	0
Mortgage loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	189,907	161,241
Current	10,669,127	11,499,113
Total	10,859,034	11,660,354
Mortgage loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	103,001	100,650
Current	10,625,257	11,442,025
Total	10,728,258	11,542,675
Mortgage loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	86,906	60,591
Current	43,870	57,088
Total	130,776	117,679
Mortgage loans (gross) | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	179,639	139,605
Current	5,835,776	6,733,931
Total	6,015,415	6,873,536
Allowance for loan losses	(44,951)	(46,283)	(80,337)	(89,267)
Mortgage loans (gross) | Residential | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	97,335	88,654
Current	5,798,076	6,684,871
Total	5,895,411	6,773,525
Mortgage loans (gross) | Residential | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	82,304	50,951
Current	37,700	49,060
Total	120,004	100,011
Mortgage loans (gross) | Residential | Full documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	24,968	35,506
Current	407,320	818,676
Total	432,288	854,182
Mortgage loans (gross) | Residential | Full documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	12,427	21,275
Current	401,486	804,880
Total	413,913	826,155
Mortgage loans (gross) | Residential | Full documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	12,541	14,231
Current	5,834	13,796
Total	18,375	28,027
Mortgage loans (gross) | Residential | Full documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	87,546	48,286
Current	4,610,420	4,955,407
Total	4,697,966	5,003,693
Mortgage loans (gross) | Residential | Full documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	50,829	33,633
Current	4,602,940	4,948,391
Total	4,653,769	4,982,024
Mortgage loans (gross) | Residential | Full documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	36,717	14,653
Current	7,480	7,016
Total	44,197	21,669
Mortgage loans (gross) | Residential | Reduced documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	25,696	38,636
Current	277,535	572,372
Total	303,231	611,008
Mortgage loans (gross) | Residential | Reduced documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	9,575	21,074
Current	266,084	547,350
Total	275,659	568,424
Mortgage loans (gross) | Residential | Reduced documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	16,121	17,562
Current	11,451	25,022
Total	27,572	42,584
Mortgage loans (gross) | Residential | Reduced documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	41,429	17,177
Current	540,501	387,476
Total	581,930	404,653
Mortgage loans (gross) | Residential | Reduced documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	24,504	12,672
Current	527,566	384,250
Total	552,070	396,922
Mortgage loans (gross) | Residential | Reduced documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	16,925	4,505
Current	12,935	3,226
Total	29,860	7,731
Mortgage loans (gross) | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	7,520	15,779
Current	4,016,585	3,897,274
Total	4,024,105	3,913,053
Allowance for loan losses	(35,544)	(39,250)	(36,703)	(35,514)
Mortgage loans (gross) | Multi-family | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	3,731	7,658
Current	4,013,541	3,893,539
Total	4,017,272	3,901,197
Mortgage loans (gross) | Multi-family | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	3,789	8,121
Current	3,044	3,735
Total	6,833	11,856
Mortgage loans (gross) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,748	5,857
Current	816,766	867,908
Total	819,514	873,765
Allowance for loan losses	(11,217)	(17,242)	$ (13,136)	$ (14,404)
Mortgage loans (gross) | Commercial real estate | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	1,935	4,338
Current	813,640	863,615
Total	815,575	867,953
Mortgage loans (gross) | Commercial real estate | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	813	1,519
Current	3,126	4,293
Total	3,939	5,812
30 to 59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	90,073	82,526
30 to 59 Days | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	81,851	77,097
30 to 59 Days | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	8,222	5,429
30 to 59 Days | Consumer and other loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,358	2,430
30 to 59 Days | Consumer and other loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,358	2,430
30 to 59 Days | Consumer and other loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
30 to 59 Days | Consumer and other loans (gross) | Home equity and other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,358	2,430
30 to 59 Days | Consumer and other loans (gross) | Home equity and other consumer | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,358	2,430
30 to 59 Days | Consumer and other loans (gross) | Home equity and other consumer | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
30 to 59 Days | Consumer and other loans (gross) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
30 to 59 Days | Consumer and other loans (gross) | Commercial and industrial | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
30 to 59 Days | Consumer and other loans (gross) | Commercial and industrial | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
30 to 59 Days | Mortgage loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	87,715	80,096
30 to 59 Days | Mortgage loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	79,493	74,667
30 to 59 Days | Mortgage loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	8,222	5,429
30 to 59 Days | Mortgage loans (gross) | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	84,841	73,326
30 to 59 Days | Mortgage loans (gross) | Residential | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	77,585	69,335
30 to 59 Days | Mortgage loans (gross) | Residential | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	7,256	3,991
30 to 59 Days | Mortgage loans (gross) | Residential | Full documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	11,227	16,314
30 to 59 Days | Mortgage loans (gross) | Residential | Full documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	10,045	13,943
30 to 59 Days | Mortgage loans (gross) | Residential | Full documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	1,182	2,371
30 to 59 Days | Mortgage loans (gross) | Residential | Full documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	43,730	26,082
30 to 59 Days | Mortgage loans (gross) | Residential | Full documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	40,151	25,878
30 to 59 Days | Mortgage loans (gross) | Residential | Full documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	3,579	204
30 to 59 Days | Mortgage loans (gross) | Residential | Reduced documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	7,511	19,310
30 to 59 Days | Mortgage loans (gross) | Residential | Reduced documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	7,254	18,490
30 to 59 Days | Mortgage loans (gross) | Residential | Reduced documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	257	820
30 to 59 Days | Mortgage loans (gross) | Residential | Reduced documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	22,373	11,620
30 to 59 Days | Mortgage loans (gross) | Residential | Reduced documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	20,135	11,024
30 to 59 Days | Mortgage loans (gross) | Residential | Reduced documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,238	596
30 to 59 Days | Mortgage loans (gross) | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,387	4,294
30 to 59 Days | Mortgage loans (gross) | Multi-family | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	1,662	3,646
30 to 59 Days | Mortgage loans (gross) | Multi-family | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	725	648
30 to 59 Days | Mortgage loans (gross) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	487	2,476
30 to 59 Days | Mortgage loans (gross) | Commercial real estate | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	246	1,686
30 to 59 Days | Mortgage loans (gross) | Commercial real estate | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	241	790
60 to 89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	25,848	25,313
60 to 89 Days | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	23,678	22,852
60 to 89 Days | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,170	2,461
60 to 89 Days | Consumer and other loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	502	962
60 to 89 Days | Consumer and other loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	502	962
60 to 89 Days | Consumer and other loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
60 to 89 Days | Consumer and other loans (gross) | Home equity and other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	502	962
60 to 89 Days | Consumer and other loans (gross) | Home equity and other consumer | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	502	962
60 to 89 Days | Consumer and other loans (gross) | Home equity and other consumer | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
60 to 89 Days | Consumer and other loans (gross) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
60 to 89 Days | Consumer and other loans (gross) | Commercial and industrial | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
60 to 89 Days | Consumer and other loans (gross) | Commercial and industrial | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
60 to 89 Days | Mortgage loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	25,346	24,351
60 to 89 Days | Mortgage loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	23,176	21,890
60 to 89 Days | Mortgage loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,170	2,461
60 to 89 Days | Mortgage loans (gross) | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	20,965	21,290
60 to 89 Days | Mortgage loans (gross) | Residential | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	19,418	19,175
60 to 89 Days | Mortgage loans (gross) | Residential | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	1,547	2,115
60 to 89 Days | Mortgage loans (gross) | Residential | Full documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,382	7,690
60 to 89 Days | Mortgage loans (gross) | Residential | Full documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,382	7,332
60 to 89 Days | Mortgage loans (gross) | Residential | Full documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	358
60 to 89 Days | Mortgage loans (gross) | Residential | Full documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	10,949	7,849
60 to 89 Days | Mortgage loans (gross) | Residential | Full documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	10,346	7,611
60 to 89 Days | Mortgage loans (gross) | Residential | Full documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	603	238
60 to 89 Days | Mortgage loans (gross) | Residential | Reduced documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,900	3,037
60 to 89 Days | Mortgage loans (gross) | Residential | Reduced documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,321	2,584
60 to 89 Days | Mortgage loans (gross) | Residential | Reduced documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	579	453
60 to 89 Days | Mortgage loans (gross) | Residential | Reduced documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	4,734	2,714
60 to 89 Days | Mortgage loans (gross) | Residential | Reduced documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	4,369	1,648
60 to 89 Days | Mortgage loans (gross) | Residential | Reduced documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	365	1,066
60 to 89 Days | Mortgage loans (gross) | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,692	2,568
60 to 89 Days | Mortgage loans (gross) | Multi-family | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,069	2,222
60 to 89 Days | Mortgage loans (gross) | Multi-family | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	623	346
60 to 89 Days | Mortgage loans (gross) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	1,689	493
60 to 89 Days | Mortgage loans (gross) | Commercial real estate | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	1,689	493
60 to 89 Days | Mortgage loans (gross) | Commercial real estate | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
90 Days or More
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	83,954	62,834
90 Days or More | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	332	4,093
90 Days or More | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	83,622	58,741
90 Days or More | Consumer and other loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	7,108	6,040
90 Days or More | Consumer and other loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
90 Days or More | Consumer and other loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	7,108	6,040
90 Days or More | Consumer and other loans (gross) | Home equity and other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	6,405	6,040
90 Days or More | Consumer and other loans (gross) | Home equity and other consumer | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
90 Days or More | Consumer and other loans (gross) | Home equity and other consumer | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	6,405	6,040
90 Days or More | Consumer and other loans (gross) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	703	0
90 Days or More | Consumer and other loans (gross) | Commercial and industrial | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
90 Days or More | Mortgage loans (gross)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	76,846	56,794
90 Days or More | Mortgage loans (gross) | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	332	4,093
90 Days or More | Mortgage loans (gross) | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	76,514	52,701
90 Days or More | Mortgage loans (gross) | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	73,833	44,989
90 Days or More | Mortgage loans (gross) | Residential | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	332	144
90 Days or More | Mortgage loans (gross) | Residential | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	73,501	44,845
90 Days or More | Mortgage loans (gross) | Residential | Full documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	11,359	11,502
90 Days or More | Mortgage loans (gross) | Residential | Full documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
90 Days or More | Mortgage loans (gross) | Residential | Full documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	11,359	11,502
90 Days or More | Mortgage loans (gross) | Residential | Full documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	32,867	14,355
90 Days or More | Mortgage loans (gross) | Residential | Full documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	332	144
90 Days or More | Mortgage loans (gross) | Residential | Full documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	32,535	14,211
90 Days or More | Mortgage loans (gross) | Residential | Reduced documentation interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	15,285	16,289
90 Days or More | Mortgage loans (gross) | Residential | Reduced documentation interest-only | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
90 Days or More | Mortgage loans (gross) | Residential | Reduced documentation interest-only | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	15,285	16,289
90 Days or More | Mortgage loans (gross) | Residential | Reduced documentation amortizing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	14,322	2,843
90 Days or More | Mortgage loans (gross) | Residential | Reduced documentation amortizing | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	0
90 Days or More | Mortgage loans (gross) | Residential | Reduced documentation amortizing | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	14,322	2,843
90 Days or More | Mortgage loans (gross) | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,441	8,917
90 Days or More | Mortgage loans (gross) | Multi-family | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	1,790
90 Days or More | Mortgage loans (gross) | Multi-family | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	2,441	7,127
90 Days or More | Mortgage loans (gross) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	572	2,888
90 Days or More | Mortgage loans (gross) | Commercial real estate | Accruing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	0	2,159
90 Days or More | Mortgage loans (gross) | Commercial real estate | Non-accrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total past due	$ 572	$ 729