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INCOME TAXES (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
INCOME TAXES [Abstract]
Tax at federal statutory rate	35.00%	35.00%	34.00%
Tax effect of:
Tax-exempt income	(1.00%)	(0.80%)	(0.40%)
Other non-deductible expenses	0.10%	0.30%	0.20%
State income taxes, net of federal benefit	5.20%	5.10%	4.50%
Tax impact from enacted change in tax rate	2.90%
Other	0.90%	(0.20%)	(0.10%)
Actual income tax expense (benefit) rate	43.10%	39.40%	38.20%

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

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

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