FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 7) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Quantitative information
OREO	$ 7,275	$ 17,521
Significant Unobservable Inputs (Level 3)
Quantitative information
OREO	7,275	17,521
OREO \| Appraisal \| Significant Unobservable Inputs (Level 3)
Quantitative information
OREO	$ 7,275	$ 17,521
OREO \| Appraisal \| Significant Unobservable Inputs (Level 3) \| Weighted Average
Quantitative information
Selling cost (as a percent)	8.00%	8.00%
Loans Receivable \| Non-PCI loans
Quantitative information
Impaired loans	$ 81,817	$ 67,811
Loans Receivable \| Non-PCI loans \| Significant Unobservable Inputs (Level 3)
Quantitative information
Impaired loans	81,817	67,811
Loans Receivable \| Non-PCI loans \| Discounted cash flow \| Significant Unobservable Inputs (Level 3)
Quantitative information
Impaired loans	$ 25,044	$ 11,499
Loans Receivable \| Non-PCI loans \| Discounted cash flow \| Significant Unobservable Inputs (Level 3) \| Minimum
Quantitative information
Discount rate (as a percent)	0.00%	0.00%
Loans Receivable \| Non-PCI loans \| Discounted cash flow \| Significant Unobservable Inputs (Level 3) \| Maximum
Quantitative information
Discount rate (as a percent)	98.00%	81.00%
Loans Receivable \| Non-PCI loans \| Discounted cash flow \| Significant Unobservable Inputs (Level 3) \| Weighted Average
Quantitative information
Discount rate (as a percent)	22.00%	49.00%
Loans Receivable \| Non-PCI loans \| Market comparables \| Significant Unobservable Inputs (Level 3)
Quantitative information
Impaired loans	$ 56,773	$ 56,312
Loans Receivable \| Non-PCI loans \| Market comparables \| Significant Unobservable Inputs (Level 3) \| Minimum
Quantitative information
Discount rate (as a percent)	0.00%	0.00%
Loans Receivable \| Non-PCI loans \| Market comparables \| Significant Unobservable Inputs (Level 3) \| Maximum
Quantitative information
Discount rate (as a percent)	100.00%	100.00%
Loans Receivable \| Non-PCI loans \| Market comparables \| Significant Unobservable Inputs (Level 3) \| Weighted Average
Quantitative information
Discount rate (as a percent)	22.00%	4.00%

Represents selling cost used as an input to measure fair value.

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- Definition

Fair value portion of other real estate owned.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Glossary Loan

-URI http://asc.fasb.org/extlink&oid=6517073

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