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FAIR VALUES OF FINANCIAL INSTRUMENTS - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Valuation allowance for other real estate owned	$ 9	$ 0	$ 9	$ 22
Alternative investments liquidation period			10 years
Affordable Housing Fund Investment
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Alternative investments unfunded investment commitments	349		$ 349
Small Business Investment Companies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Alternative investments unfunded investment commitments	13,200		13,200
Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Alternative investments unfunded investment commitments	2,000		2,000
Agency mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregated unpaid principal balance	$ 34,800		$ 34,800		$ 18,600
Expected loss rate			1.63%		1.85%

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- Definition

Alternative Investments, Liquidation Period

+ References

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- Definition

Alternative Investments, Unfunded Investment Commitments

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- Definition

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- Definition

This is the principal amount outstanding for loans which are in the process of being securitized as of the date of the statement of financial position (across all types of loans).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=64830801&loc=d3e107314-111719

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- Definition

Amount of expense recognized in the income statement for a decrease in valuation of real estate owned (REO).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(4))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Percentage of contractually collectible principal associated with a financial asset expected not to be collected due to default by the borrower.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122596-111746

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