GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details Textual) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Goodwill expected to be tax deductible	$ 38,300,000				$ 39,500,000				$ 38,300,000		$ 39,500,000
Goodwill impairment		2,227,000							2,227,000	[1]		[1]		[1]
Amortization of intangible assets									$ 1,700,000				$ 2,000,000
Weighted average amortization period for intangible assets									9 years 10 months 24 days
Core deposit intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period for intangible assets									9 years

[1] Amount represents the total amount of goodwill relating to Compass Exchange Advisors, LLC, which was acquired in January 2007.