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Loans Receivable and Allowance for Loan Losses - Composition of Loans Receivable Portfolio and Aging Analysis by Accruing and Non-Accrual Loans (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Loans receivable and allowance for loan losses disclosures        
Total Past Due $ 195,241 $ 207,023    
Current 9,969,995 10,173,335    
Total loans 10,165,236 10,380,358    
Net unamortized premiums and deferred loan origination costs 35,730 36,829    
Loans receivable 10,200,966 10,417,187    
Allowance for loan losses (82,500) (86,100) $ (94,200) $ (98,000)
Loans receivable, net 10,118,466 10,331,087    
Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 84,729 93,458    
Current 9,942,116 10,138,664    
Total loans 10,026,845 10,232,122    
Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 110,512 113,565    
Current 27,879 34,671    
Total loans 138,391 148,236    
Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 188,591 200,020    
Current 9,750,818 9,941,224    
Total loans 9,939,409 10,141,244    
Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 82,250 90,980    
Current 9,722,939 9,906,553    
Total loans 9,805,189 9,997,533    
Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 106,341 109,040    
Current 27,879 34,671    
Total loans 134,220 143,711    
30-59 Days        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 71,598 77,476    
30-59 Days | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 67,199 72,846    
30-59 Days | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,399 4,630    
30-59 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 69,614 76,195    
30-59 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 65,215 71,565    
30-59 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,399 4,630    
60-89 Days        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 17,669 22,215    
60-89 Days | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 15,891 20,612    
60-89 Days | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,778 1,603    
60-89 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 17,174 21,018    
60-89 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 15,396 19,415    
60-89 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,778 1,603    
90 Days or More        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 105,974 107,332    
90 Days or More | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,639 0    
90 Days or More | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 104,335 107,332    
90 Days or More | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 101,803 102,807    
90 Days or More | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,639 0    
90 Days or More | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 100,164 102,807    
Residential | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 176,725 192,322    
Current 5,038,045 5,173,041    
Total loans 5,214,770 5,365,363    
Allowance for loan losses (34,351) (36,439) (44,378) (44,951)
Residential | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 73,082 85,784    
Current 5,016,129 5,145,585    
Total loans 5,089,211 5,231,369    
Residential | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 103,643 106,538    
Current 21,916 27,456    
Total loans 125,559 133,994    
Residential | Mortgage loans (gross) | Full documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 10,193 16,622    
Current 167,667 214,364    
Total loans 177,860 230,986    
Residential | Mortgage loans (gross) | Full documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,120 4,580    
Current 166,790 212,316    
Total loans 167,910 216,896    
Residential | Mortgage loans (gross) | Full documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 9,073 12,042    
Current 877 2,048    
Total loans 9,950 14,090    
Residential | Mortgage loans (gross) | Full documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 85,918 90,232    
Current 4,249,976 4,312,373    
Total loans 4,335,894 4,402,605    
Residential | Mortgage loans (gross) | Full documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 37,950 44,780    
Current 4,240,703 4,300,620    
Total loans 4,278,653 4,345,400    
Residential | Mortgage loans (gross) | Full documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 47,968 45,452    
Current 9,273 11,753    
Total loans 57,241 57,205    
Residential | Mortgage loans (gross) | Reduced documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 11,991 15,377    
Current 56,100 84,184    
Total loans 68,091 99,561    
Residential | Mortgage loans (gross) | Reduced documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,488 3,753    
Current 54,181 80,416    
Total loans 56,669 84,169    
Residential | Mortgage loans (gross) | Reduced documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 9,503 11,624    
Current 1,919 3,768    
Total loans 11,422 15,392    
Residential | Mortgage loans (gross) | Reduced documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 68,623 70,091    
Current 564,302 562,120    
Total loans 632,925 632,211    
Residential | Mortgage loans (gross) | Reduced documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 31,524 32,671    
Current 554,455 552,233    
Total loans 585,979 584,904    
Residential | Mortgage loans (gross) | Reduced documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 37,099 37,420    
Current 9,847 9,887    
Total loans 46,946 47,307    
Residential | 30-59 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 61,640 72,445    
Residential | 30-59 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 58,358 68,462    
Residential | 30-59 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 3,282 3,983    
Residential | 30-59 Days | Mortgage loans (gross) | Full documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,120 1,913    
Residential | 30-59 Days | Mortgage loans (gross) | Full documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,120 1,476    
Residential | 30-59 Days | Mortgage loans (gross) | Full documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 437    
Residential | 30-59 Days | Mortgage loans (gross) | Full documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 35,256 39,032    
Residential | 30-59 Days | Mortgage loans (gross) | Full documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 32,903 36,563    
Residential | 30-59 Days | Mortgage loans (gross) | Full documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,353 2,469    
Residential | 30-59 Days | Mortgage loans (gross) | Reduced documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,186 2,974    
Residential | 30-59 Days | Mortgage loans (gross) | Reduced documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,186 2,974    
Residential | 30-59 Days | Mortgage loans (gross) | Reduced documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 30-59 Days | Mortgage loans (gross) | Reduced documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 23,078 28,526    
Residential | 30-59 Days | Mortgage loans (gross) | Reduced documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 22,149 27,449    
Residential | 30-59 Days | Mortgage loans (gross) | Reduced documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 929 1,077    
Residential | 60-89 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 16,106 18,314    
Residential | 60-89 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 14,724 17,322    
Residential | 60-89 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,382 992    
Residential | 60-89 Days | Mortgage loans (gross) | Full documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 3,104    
Residential | 60-89 Days | Mortgage loans (gross) | Full documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 3,104    
Residential | 60-89 Days | Mortgage loans (gross) | Full documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 60-89 Days | Mortgage loans (gross) | Full documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 5,545 8,217    
Residential | 60-89 Days | Mortgage loans (gross) | Full documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 5,047 8,217    
Residential | 60-89 Days | Mortgage loans (gross) | Full documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 498 0    
Residential | 60-89 Days | Mortgage loans (gross) | Reduced documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 302 779    
Residential | 60-89 Days | Mortgage loans (gross) | Reduced documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 302 779    
Residential | 60-89 Days | Mortgage loans (gross) | Reduced documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 60-89 Days | Mortgage loans (gross) | Reduced documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 10,259 6,214    
Residential | 60-89 Days | Mortgage loans (gross) | Reduced documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 9,375 5,222    
Residential | 60-89 Days | Mortgage loans (gross) | Reduced documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 884 992    
Residential | 90 Days or More | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 98,979 101,563    
Residential | 90 Days or More | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 90 Days or More | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 98,979 101,563    
Residential | 90 Days or More | Mortgage loans (gross) | Full documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 9,073 11,605    
Residential | 90 Days or More | Mortgage loans (gross) | Full documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 90 Days or More | Mortgage loans (gross) | Full documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 9,073 11,605    
Residential | 90 Days or More | Mortgage loans (gross) | Full documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 45,117 42,983    
Residential | 90 Days or More | Mortgage loans (gross) | Full documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 90 Days or More | Mortgage loans (gross) | Full documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 45,117 42,983    
Residential | 90 Days or More | Mortgage loans (gross) | Reduced documentation interest-only        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 9,503 11,624    
Residential | 90 Days or More | Mortgage loans (gross) | Reduced documentation interest-only | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 90 Days or More | Mortgage loans (gross) | Reduced documentation interest-only | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 9,503 11,624    
Residential | 90 Days or More | Mortgage loans (gross) | Reduced documentation amortizing        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 35,286 35,351    
Residential | 90 Days or More | Mortgage loans (gross) | Reduced documentation amortizing | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Residential | 90 Days or More | Mortgage loans (gross) | Reduced documentation amortizing | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 35,286 35,351    
Multi-family | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 6,704 4,138    
Current 4,017,060 4,042,484    
Total loans 4,023,764 4,046,622    
Allowance for loan losses (33,949) (34,901) (33,020) (35,544)
Multi-family | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 5,313 1,855    
Current 4,014,746 4,040,386    
Total loans 4,020,059 4,042,241    
Multi-family | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,391 2,283    
Current 2,314 2,098    
Total loans 3,705 4,381    
Multi-family | 30-59 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 5,599 1,488    
Multi-family | 30-59 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 5,162 1,060    
Multi-family | 30-59 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 437 428    
Multi-family | 60-89 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 547 1,406    
Multi-family | 60-89 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 151 795    
Multi-family | 60-89 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 396 611    
Multi-family | 90 Days or More | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 558 1,244    
Multi-family | 90 Days or More | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Multi-family | 90 Days or More | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 558 1,244    
Commercial real estate | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 5,162 3,560    
Current 695,713 725,699    
Total loans 700,875 729,259    
Allowance for loan losses (8,905) (9,299) (10,368) (11,217)
Commercial real estate | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 3,855 3,341    
Current 692,064 720,582    
Total loans 695,919 723,923    
Commercial real estate | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,307 219    
Current 3,649 5,117    
Total loans 4,956 5,336    
Commercial real estate | 30-59 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,375 2,262    
Commercial real estate | 30-59 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,695 2,043    
Commercial real estate | 30-59 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 680 219    
Commercial real estate | 60-89 Days | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 521 1,298    
Commercial real estate | 60-89 Days | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 521 1,298    
Commercial real estate | 60-89 Days | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Commercial real estate | 90 Days or More | Mortgage loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,266 0    
Commercial real estate | 90 Days or More | Mortgage loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,639 0    
Commercial real estate | 90 Days or More | Mortgage loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 627 0    
Consumer and other loans (gross)        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 6,650 7,003    
Current 219,177 232,111    
Total loans 225,827 239,114    
Allowance for loan losses (5,295) (5,461) $ (6,434) $ (6,288)
Consumer and other loans (gross) | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,479 2,478    
Current 219,177 232,111    
Total loans 221,656 234,589    
Consumer and other loans (gross) | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,171 4,525    
Current 0 0    
Total loans 4,171 4,525    
Consumer and other loans (gross) | Home equity and other consumer        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 6,243 6,314    
Current 128,610 133,024    
Total loans 134,853 139,338    
Consumer and other loans (gross) | Home equity and other consumer | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 2,104 1,831    
Current 128,610 133,024    
Total loans 130,714 134,855    
Consumer and other loans (gross) | Home equity and other consumer | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,139 4,483    
Current 0 0    
Total loans 4,139 4,483    
Consumer and other loans (gross) | Commercial and industrial        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 407 689    
Current 90,567 99,087    
Total loans 90,974 99,776    
Consumer and other loans (gross) | Commercial and industrial | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 375 647    
Current 90,567 99,087    
Total loans 90,942 99,734    
Consumer and other loans (gross) | Commercial and industrial | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 32 42    
Current 0 0    
Total loans 32 42    
Consumer and other loans (gross) | 30-59 Days        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,984 1,281    
Consumer and other loans (gross) | 30-59 Days | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,984 1,281    
Consumer and other loans (gross) | 30-59 Days | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 30-59 Days | Home equity and other consumer        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,609 1,281    
Consumer and other loans (gross) | 30-59 Days | Home equity and other consumer | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 1,609 1,281    
Consumer and other loans (gross) | 30-59 Days | Home equity and other consumer | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 30-59 Days | Commercial and industrial        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 375 0    
Consumer and other loans (gross) | 30-59 Days | Commercial and industrial | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 375 0    
Consumer and other loans (gross) | 30-59 Days | Commercial and industrial | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 60-89 Days        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 495 1,197    
Consumer and other loans (gross) | 60-89 Days | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 495 1,197    
Consumer and other loans (gross) | 60-89 Days | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 60-89 Days | Home equity and other consumer        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 495 550    
Consumer and other loans (gross) | 60-89 Days | Home equity and other consumer | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 495 550    
Consumer and other loans (gross) | 60-89 Days | Home equity and other consumer | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 60-89 Days | Commercial and industrial        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 647    
Consumer and other loans (gross) | 60-89 Days | Commercial and industrial | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 647    
Consumer and other loans (gross) | 60-89 Days | Commercial and industrial | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 90 Days or More        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,171 4,525    
Consumer and other loans (gross) | 90 Days or More | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 90 Days or More | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,171 4,525    
Consumer and other loans (gross) | 90 Days or More | Home equity and other consumer        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,139 4,483    
Consumer and other loans (gross) | 90 Days or More | Home equity and other consumer | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 0 0    
Consumer and other loans (gross) | 90 Days or More | Home equity and other consumer | Non-accrual loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 4,139 4,483    
Consumer and other loans (gross) | 90 Days or More | Commercial and industrial        
Loans receivable and allowance for loan losses disclosures        
Total Past Due 32 42    
Consumer and other loans (gross) | 90 Days or More | Commercial and industrial | Accruing loans        
Loans receivable and allowance for loan losses disclosures        
Total Past Due $ 0 $ 0