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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Traditional Mortgages Portfolio (Detail) (USD $)				9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended							9 Months Ended		12 Months Ended		9 Months Ended	12 Months Ended	9 Months Ended		12 Months Ended		9 Months Ended	12 Months Ended	9 Months Ended		12 Months Ended		9 Months Ended	12 Months Ended	9 Months Ended		12 Months Ended		9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2014 Loan Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Loan Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Loan	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Loan Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Loan Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Green Loans	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Interest Only Loans	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Interest Only Loans	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Negative amortization	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Negative amortization	Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Loan		Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Loan		Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Green Loans Loan		Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Green Loans Loan		Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Green Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Green Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Interest Only Loans Loan		Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Interest Only Loans Loan		Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Interest Only Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Interest Only Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Negative amortization Loan		Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Negative amortization Loan		Sep. 30, 2014 Non-Traditional Mortgages (NTM) First lien Negative amortization Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) First lien Negative amortization Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Second lien Loan	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Second lien Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Second lien Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Second lien Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Second lien Green Loans Loan	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Second lien Green Loans Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Second lien Green Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Second lien Green Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Second lien Interest Only Loans Loan	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Second lien Interest Only Loans Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Second lien Interest Only Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Second lien Interest Only Loans Nontraditional Mortgage Loans Portfolio Loan Portfolio Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count						404	478											384	[1]	454	[1]			152	[1]	173	[1]			200	[1]	244	[1]			32	[1]	37	[1]			20	24			19	23			1	1
Amount	$ 2,712,068,000	$ 2,446,111,000	$ 2,596,188,000			$ 335,355,000	$ 309,597,000					$ 131,300,000	$ 153,000,000	$ 190,800,000	$ 140,000,000	$ 13,200,000	$ 16,600,000	$ 330,290,000	[1]	$ 304,195,000	[1]			$ 126,323,000		$ 147,705,000	[1]			$ 190,734,000	[1]	$ 139,867,000	[1]			$ 13,233,000	[1]	$ 16,623,000	[1]			$ 5,065,000	$ 5,402,000			$ 4,952,000	$ 5,289,000			$ 113,000	$ 113,000
Concentration risk percentage				100.00%	100.00%			100.00%	100.00%	12.40%	12.70%											98.40%	98.20%					37.70%	47.60%					56.80%	45.20%					3.90%	5.40%			1.60%	1.80%			1.50%	1.70%			0.10%	0.10%
[1] LTV represents estimated current loan to value ratio, determined by dividing current unpaid principal balance by latest estimated property value received per the Company policy.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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Indicates the number of mortgages under each classification.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule IV)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-29.3)

-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule IV

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 29

-Paragraph 3

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