ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets measured at fair value on recurring basis
Available for sale securities	$ 619,472	$ 587,184
U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities	67,236	95,425
State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities	72,347	63,693
U.S. GSE residential mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	162,004	101,425
U.S. GSE Residential collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	233,717	258,599
U.S. GSE commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	12,579	2,945
U.S. GSE commercial collateralized mortgage obligations
Assets measured at fair value on recurring basis
Available for sale securities	30,914	24,082
Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities	23,037	23,037
Corporate bonds
Assets measured at fair value on recurring basis
Available for sale securities	$ 17,638	$ 17,978
Quoted Prices In Active Markets for Identical Assets (Level 1)
Assets measured at fair value on recurring basis
Available for sale securities
Significant Other Observable Inputs (Level 2)
Assets measured at fair value on recurring basis
Available for sale securities	$ 619,472	$ 587,184
Significant Unobservable Inputs (Level 3)
Assets measured at fair value on recurring basis
Available for sale securities
Carrying Amount
Assets measured at fair value on recurring basis
Available for sale securities	$ 619,472	$ 587,184
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1)
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | U.S. GSE residential mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | U.S. GSE Residential collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | U.S. GSE commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | U.S. GSE commercial collateralized mortgage obligations
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Corporate bonds
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Derivatives
Financial Liabilities:
Available for sale securities
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets measured at fair value on recurring basis
Available for sale securities	$ 619,472	$ 587,184
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities	67,236	95,425
Recurring basis | Significant Other Observable Inputs (Level 2) | State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities	72,347	63,693
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	162,004	101,425
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	233,717	258,599
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	12,579	2,945
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	30,914	24,082
Recurring basis | Significant Other Observable Inputs (Level 2) | Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities	23,037	23,037
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate bonds
Assets measured at fair value on recurring basis
Available for sale securities	17,638	17,978
Recurring basis | Significant Other Observable Inputs (Level 2) | Derivatives
Financial Liabilities:
Available for sale securities	$ (1,332)	$ (943)
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. GSE residential mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. GSE Residential collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. GSE commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. GSE commercial collateralized mortgage obligations
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate bonds
Assets measured at fair value on recurring basis
Available for sale securities
Recurring basis | Significant Unobservable Inputs (Level 3) | Derivatives
Financial Liabilities:
Available for sale securities
Recurring basis | Carrying Amount
Assets measured at fair value on recurring basis
Available for sale securities	$ 619,472	$ 587,184
Recurring basis | Carrying Amount | U.S. GSE securities
Assets measured at fair value on recurring basis
Available for sale securities	67,236	95,425
Recurring basis | Carrying Amount | State and municipal obligations
Assets measured at fair value on recurring basis
Available for sale securities	72,347	63,693
Recurring basis | Carrying Amount | U.S. GSE residential mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	162,004	101,425
Recurring basis | Carrying Amount | U.S. GSE Residential collateralized mortgage Obligations
Assets measured at fair value on recurring basis
Available for sale securities	233,717	258,599
Recurring basis | Carrying Amount | U.S. GSE commercial mortgage-backed securities
Assets measured at fair value on recurring basis
Available for sale securities	12,579	2,945
Recurring basis | Carrying Amount | U.S. GSE commercial collateralized mortgage obligations
Assets measured at fair value on recurring basis
Available for sale securities	30,914	24,082
Recurring basis | Carrying Amount | Other Asset backed securities
Assets measured at fair value on recurring basis
Available for sale securities	23,037	23,037
Recurring basis | Carrying Amount | Corporate bonds
Assets measured at fair value on recurring basis
Available for sale securities	17,638	17,978
Recurring basis | Carrying Amount | Derivatives
Financial Liabilities:
Available for sale securities	$ (1,332)	$ (943)