COMMITMENTS AND CONTINGENCIES (Commitments Without Recorded Liability) (Details) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2016 USD ($) location	Dec. 31, 2015 USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number of Properties Subject to Non-cancelable Operating Leases \| location	148
Mortgage loan applications, day interest rate is locked	45 days
Minimum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Mortgage loan applications, day interest rate is locked	30 days
Maximum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Mortgage loan applications, day interest rate is locked	60 days
Commitments to extend credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	$ 2,147,174	$ 2,132,996
Standby letters of credit and financial guarantees [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	23,464	22,315
Commitments to originate loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	40,978	32,908
Commitments to originate loans held for sale [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	104,227	76,146
Commitmenst to sell loans secured by one- to four residential properties [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	48,546	37,545
Counterparty default losses on forward contracts	0	0
Commitments to sell securities related to mortgage banking activities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	44,467	41,500
Counterparty default losses on forward contracts	$ 0	$ 0

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- Definition

Operating Leases, Number of Properties Subject to Non-cancelable Operating Leases at the balance sheet date

+ References

No definition available.

+ Details

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- Definition

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

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- Definition

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+ References

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- Definition

The amount of the loss on termination of a contract for default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 912
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=51676457&loc=d3e52595-109384

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