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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Traditional Mortgage Performance by Credit Score (Detail) (USD $)				9 Months Ended	12 Months Ended	9 Months Ended		12 Months Ended		9 Months Ended		0 Months Ended	9 Months Ended		12 Months Ended		0 Months Ended		0 Months Ended			0 Months Ended				0 Months Ended			0 Months Ended				0 Months Ended			0 Months Ended				0 Months Ended			0 Months Ended				0 Months Ended			0 Months Ended				0 Months Ended			0 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Loan	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Loan	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) Green Loans	Dec. 31, 2013 Non-Traditional Mortgages (NTM) Green Loans	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Loan		Dec. 31, 2013 Non-Traditional Mortgages (NTM) Green Loans First lien Loan		Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Greater than 800 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Greater than 800 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Greater than 800	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Greater than 800 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Greater than 800 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Greater than 800	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Greater than 800 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 700-799 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 700-799 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 700-799	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 700-799 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 700-799 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 700-799	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 700-799 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 600-699 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 600-699 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 600-699	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 600-699 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 600-699 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 600-699	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien 600-699 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Less than 600 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Less than 600 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Less than 600	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Less than 600 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Less than 600 Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Less than 600	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien Less than 600 Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien No FICO Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien No FICO Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien No FICO	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien No FICO Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien No FICO Loan	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien No FICO	Sep. 30, 2014 Non-Traditional Mortgages (NTM) Green Loans First lien No FICO Loan Portfolio Concentration Risk Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio
Financing Receivable, Recorded Investment [Line Items]
Count				404	478	384	[1]	454	[1]				152	[1]	173	[1]	152			152				21			13				74			89				33			32				9			8				15			10
Amount	$ 2,712,068,000	$ 2,446,111,000	$ 2,596,188,000	$ 335,355,000	$ 309,597,000	$ 330,290,000	[1]	$ 304,195,000	[1]	$ 131,300,000	$ 153,000,000		$ 126,323,000		$ 147,705,000	[1]		$ 126,323,000			$ 126,323,000				$ 13,095,000			$ 7,307,000				$ 56,628,000			$ 68,877,000				$ 29,172,000			$ 28,097,000				$ 10,536,000			$ 7,003,000				$ 16,892,000			$ 15,039,000
Concentration risk percentage																			100.00%			100.00%				10.40%			5.80%				44.80%			54.60%				23.10%			22.20%				8.30%			5.50%				13.40%			11.90%
Count Change												0											8							(15)							1							1							5
Amount change				$ 25,800,000						$ (21,700,000)		$ 0											$ 5,788,000							$ (12,249,000)							$ 1,075,000							$ 3,533,000							$ 1,853,000
Percent Change				8.30%						(14.20%)		0.00%											4.60%							(9.80%)							0.90%							2.80%							1.50%
[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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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)

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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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

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-Publisher FASB

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph c

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-Publisher SEC

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