REPURCHASE AGREEMENTS (Details) $ in Thousands	Sep. 30, 2015 USD ($)
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 203,866
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	173,803
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	30,063
Commercial Borrower
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	30,063
Commercial Borrower | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | 30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	30,063
Commercial Borrower | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	27,959
Commercial Borrower | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | 30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	27,959
Commercial Borrower | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	2,104
Commercial Borrower | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | 30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Commercial Borrower | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	2,104
Retail
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	173,803
Retail | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	173,803
Retail | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | 30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Obligations of states and political subdivisions
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	372
Retail | Obligations of states and political subdivisions | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	372
Retail | Obligations of states and political subdivisions | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Obligations of states and political subdivisions | 30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Obligations of states and political subdivisions | Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	102,016
Retail | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	102,016
Retail | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | 30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	71,415
Retail | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	71,415
Retail | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | 30 - 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0
Retail | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 0