ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets measured at fair value on recurring basis
Available for sale securities	$ 626,732	$ 575,179
U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities	126,780	152,757
State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities	66,376	61,656
U.S. GSE Residential mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	57,421	14,435
U.S. GSE Residential collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	266,703	279,191
U.S. GSE Commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	2,892	2,834
U.S. GSE Commercial collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	32,845	26,910
Non Agency commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	793	3,578
Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities	55,917	33,818
Corporate Bonds
Assets measured at fair value on recurring basis
Available for sale securities	17,005
Significant Other Observable Inputs (Level 2)
Assets measured at fair value on recurring basis
Available for sale securities	626,732	575,179
Financial Liabilities: Derivatives	(314)	(164)
Carrying Value
Assets measured at fair value on recurring basis
Available for sale securities	626,732	575,179
Financial Liabilities: Derivatives	(314)	(164)
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets measured at fair value on recurring basis
Available for sale securities	626,732	575,179
Financial Liabilities: Derivatives	(314)	(164)
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities	126,780	152,757
Recurring basis | Significant Other Observable Inputs (Level 2) | State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities	66,376	61,656
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. GSE Residential mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	57,421	14,435
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. GSE Residential collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	266,703	279,191
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. GSE Commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	2,892	2,834
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. GSE Commercial collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	32,845	26,910
Recurring basis | Significant Other Observable Inputs (Level 2) | Non Agency commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	793	3,578
Recurring basis | Significant Other Observable Inputs (Level 2) | Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities	55,917	33,818
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate Bonds
Assets measured at fair value on recurring basis
Available for sale securities	17,005
Recurring basis | Carrying Value
Assets measured at fair value on recurring basis
Available for sale securities	626,732	575,179
Financial Liabilities: Derivatives	(314)	(164)
Recurring basis | Carrying Value | U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities	126,780	152,757
Recurring basis | Carrying Value | State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities	66,376	61,656
Recurring basis | Carrying Value | U.S. GSE Residential mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	57,421	14,435
Recurring basis | Carrying Value | U.S. GSE Residential collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	266,703	279,191
Recurring basis | Carrying Value | U.S. GSE Commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	2,892	2,834
Recurring basis | Carrying Value | U.S. GSE Commercial collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	32,845	26,910
Recurring basis | Carrying Value | Non Agency commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	793	3,578
Recurring basis | Carrying Value | Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities	55,917	33,818
Recurring basis | Carrying Value | Corporate Bonds
Assets measured at fair value on recurring basis
Available for sale securities	$ 17,005