FAIR VALUE DISCLOSURES - Summary of Financial Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) (Fair Value, Measurements, Nonrecurring, USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Fair Value Measurements Using Level 1
Assets
Impaired loans	$ 0	[1]	$ 0	[1]
Other Real Estate Owned, Fair Value Disclosure	0		0
Covered Other Real Estate Owned, Fair Value Disclosure	0		0
Fair Value Measurements Using Level 2
Assets
Impaired loans	0	[1]	0	[1]
Other Real Estate Owned, Fair Value Disclosure	0		0
Covered Other Real Estate Owned, Fair Value Disclosure	0		0
Fair Value Measurements Using Level 3
Assets
Impaired loans	20,836	[1]	19,564	[1]
Other Real Estate Owned, Fair Value Disclosure	6,077		5,651
Covered Other Real Estate Owned, Fair Value Disclosure	$ 12,263		$ 14,059

[1] Amounts represent the fair value of collateral for impaired loans allocated to the allowance for loan and lease losses. Fair values are determined using actual market prices (Level 1), independent third party valuations and borrower records, discounted as appropriate (Level 3).