INCOME TAXES - Income Tax Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	35.00%	35.00%	35.00%
Tax computed at statutory rate of 35%	$ 9,491	$ 2,815	$ (815)
Effect of state income taxes	1,287	1,348	11
Change in income tax rates	(1,899)	1,544	0
Gain on acquisition	0	(2,643)	0
Non-taxable interest income	(437)	(79)	(189)
Non-taxable bank-owned life insurance	(549)	(348)	(247)
Non-deductible merger costs	1,006	309	488
Write-off of acquired net operating losses subject to Section 382 limitation	652	0	0
Change in deferred tax asset valuation allowance	(4,797)	(460)	(1,869)
Other	659	(472)	(595)
Income tax expense (benefit)	$ 5,413us-gaap_IncomeTaxExpenseBenefit	$ 2,014us-gaap_IncomeTaxExpenseBenefit	$ (3,216)us-gaap_IncomeTaxExpenseBenefit

Effective Income Tax Rate Reconciliation, Gain on Acquisition

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Effective Income Tax Rate Reconciliation, Write-off of Acquired Net Operating Losses

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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