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FAIR VALUES OF FINANCIAL INSTRUMENTS - Quantitative Information About Level 3 Fair Value Measurements (Detail) (USD $) In Thousands, unless otherwise specified										9 Months Ended		12 Months Ended	9 Months Ended		12 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2014 Recurring Significant Unobservable Inputs (Level 3) Mortgage Servicing Rights	Dec. 31, 2013 Recurring Significant Unobservable Inputs (Level 3) Mortgage Servicing Rights	Sep. 30, 2013 Recurring Significant Unobservable Inputs (Level 3) Mortgage Servicing Rights	Sep. 30, 2014 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Minimum	Sep. 30, 2013 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Minimum	Dec. 31, 2013 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Minimum	Sep. 30, 2014 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Maximum	Sep. 30, 2013 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Maximum	Dec. 31, 2013 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Maximum	Sep. 30, 2014 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Weighted Average	Sep. 30, 2013 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Weighted Average	Dec. 31, 2013 Recurring Significant Unobservable Inputs (Level 3) Discounted cash flow Mortgage Servicing Rights Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortgage servicing rights, at fair value	$ 11,376	$ 9,816	$ 13,535	$ 7,220	$ 4,620	$ 1,739	$ 11,376	$ 13,535	$ 7,220
Discount rate										10.00%	10.00%	10.00%	21.22%	17.46%	17.94%	10.70%	10.33%	10.26%
Prepayment Rate										4.71%	3.29%	4.19%	34.76%	38.70%	34.54%	12.41%	10.89%	9.85%

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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)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

+ 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)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

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