INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal tax expense									$ 294
State tax expense									305
Total current expense									599
Deferred :
Federal tax expense									8,685
State tax expense									2,509
Total deferred tax expense									11,194
Decrease in valuation allowance									(30)
Income tax expense (benefit)
Total income tax expense	3,875	4,230	4,119	(461)	4,762	3,917	4,038	4,387	11,763	17,104	13,223
Effective income tax rate differs from the statutory tax rate
Statutory tax rate (as a percent)									35.00%
Increase (decrease) resulting from:
State taxes, net of federal tax benefit (as a percent)									4.00%
Tax exempt income - investments, net (as a percent)									(6.10%)
Bank-owned life insurance (as a percent)									(2.40%)
Disallowed merger costs (as a percent)									0.50%
Tax credits, net of basis reduction (as a percent)									(3.60%)
Other, net (as a percent)									(1.50%)
Effective tax rate (as a percent)									25.90%
Reconciliation of the statutory federal income tax rate to the effective tax rate
Statutory tax rate									15,928
Increase (decrease) resulting from:
State taxes, net of federal tax benefit									1,810
Tax exempt income - investments, net									(2,796)
Bank-owned life insurance									(1,070)
Disallowed merger costs									206
Tax credits, net of basis reduction									(1,658)
Other, net									(657)
Income Tax Expense (Benefit)	3,875	4,230	4,119	(461)	4,762	3,917	4,038	4,387	11,763	17,104	13,223
Continuing and discontinued operations
Current:
Federal tax expense										5,124	2,298
State tax expense										2,171	1,278
Total current expense										7,295	3,576
Deferred :
Federal tax expense										9,445	9,247
State tax expense										2,115	912
Total deferred tax expense										11,560	10,159
Decrease in valuation allowance										(1,751)	(136)
Income tax expense (benefit)
Total income tax expense										17,104	13,599
Effective income tax rate differs from the statutory tax rate
Statutory tax rate (as a percent)										35.00%	35.00%
Increase (decrease) resulting from:
State taxes, net of federal tax benefit (as a percent)										4.70%	3.70%
Tax exempt income - investments, net (as a percent)										(3.80%)	(4.70%)
Bank-owned life insurance (as a percent)										(1.10%)	(2.00%)
Disallowed merger costs (as a percent)											1.10%
Non-deductible goodwill on branch divestiture (as a percent)											0.90%
Tax credits, net of basis reduction (as a percent)										(1.70%)	(2.50%)
Reduction in valuation allowance (as a percent)										(2.90%)	(0.90%)
Other, net (as a percent)										(0.90%)	(1.50%)
Effective tax rate (as a percent)										29.30%	29.10%
Reconciliation of the statutory federal income tax rate to the effective tax rate
Statutory tax rate										20,387	16,375
Increase (decrease) resulting from:
State taxes, net of federal tax benefit										2,760	1,715
Tax exempt income - investments, net										(2,211)	(2,187)
Bank-owned life insurance										(631)	(950)
Disallowed merger costs											523
Non-deductible goodwill on branch divestiture											419
Tax credits, net of basis reduction										(995)	(1,148)
Reduction in valuation allowance										(1,712)	(428)
Other, net										(494)	(720)
Income Tax Expense (Benefit)										$ 17,104	$ 13,599