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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | $ 13,229 | $ 14,189
Available-for-securities | 1,209,537 | 1,154,457
Other assets | 98,457 | 64,926
Fair Value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 13,229 | 14,189
Available-for-securities | 1,209,537 | 1,154,457
Loans held for sale | 120,673 | 13,191
Derivative assets | 21,617 | 17,507
Derivative liabilities | 24,420 | 28,181
Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 0 | 0
Available-for-securities | 62,284 | 32,925
Loans held for sale | 0 | 0
Derivative assets | 622 | 45
Derivative liabilities | 0 | 0
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 0 | 0
Available-for-securities | 1,147,253 | 1,120,824
Loans held for sale | 120,673 | 13,191
Derivative assets | 16,157 | 17,130
Derivative liabilities | 24,420 | 28,181
Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 13,229 | 14,189
Available-for-securities | 0 | 708
Loans held for sale | 0 | 0
Derivative assets | 4,838 | 332
Derivative liabilities | 0 | 0
Recurring | Fair Value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 13,229 | 14,189
Loans held for sale | 120,673 | 13,191
Derivative assets | 21,617 | 17,507
Other assets | 798 | 0
Derivative liabilities | 24,420 | 28,181
Recurring | Fair Value | Debt securities | Municipal bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 119,816 | 104,561
Recurring | Fair Value | Debt securities | Agency collateralized mortgage obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 651,911 | 833,036
Recurring | Fair Value | Debt securities | Agency residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 228,684 | 126,829
Recurring | Fair Value | Debt securities | Agency commercial mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 64,534 | 0
Recurring | Fair Value | Debt securities | Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 56,006 | 41,023
Recurring | Fair Value | Debt securities | Trust preferred securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 11,887 | 11,900
Recurring | Fair Value | Debt securities | Other bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 11,158 | 3,141
Recurring | Fair Value | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 65,541 | 33,967
Recurring | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 0 | 0
Loans held for sale | 0 | 0
Derivative assets | 622 | 45
Other assets | 0 | 0
Derivative liabilities | 0 | 0
Recurring | Level 1 | Debt securities | Municipal bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 1 | Debt securities | Agency collateralized mortgage obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 1 | Debt securities | Agency residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 1 | Debt securities | Agency commercial mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 1 | Debt securities | Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 1 | Debt securities | Trust preferred securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 1 | Debt securities | Other bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 1 | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 62,284 | 32,925
Recurring | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 0 | 0
Loans held for sale | 120,673 | 13,191
Derivative assets | 16,157 | 17,130
Other assets | 0 | 0
Derivative liabilities | 24,420 | 28,181
Recurring | Level 2 | Debt securities | Municipal bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 119,816 | 104,561
Recurring | Level 2 | Debt securities | Agency collateralized mortgage obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 651,911 | 833,036
Recurring | Level 2 | Debt securities | Agency residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 228,684 | 126,829
Recurring | Level 2 | Debt securities | Agency commercial mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 64,534 | 0
Recurring | Level 2 | Debt securities | Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 56,006 | 41,023
Recurring | Level 2 | Debt securities | Trust preferred securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 11,887 | 11,900
Recurring | Level 2 | Debt securities | Other bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 11,158 | 3,141
Recurring | Level 2 | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 3,257 | 334
Recurring | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Trading security | 13,229 | 14,189
Loans held for sale | 0 | 0
Derivative assets | 4,838 | 332
Other assets | 798 | 0
Derivative liabilities | 0 | 0
Recurring | Level 3 | Debt securities | Municipal bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 3 | Debt securities | Agency collateralized mortgage obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 3 | Debt securities | Agency residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 3 | Debt securities | Agency commercial mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 3 | Debt securities | Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 3 | Debt securities | Trust preferred securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 3 | Debt securities | Other bonds and obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | 0 | 0
Recurring | Level 3 | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-securities | $ 0 | $ 708

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