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RETIREMENT PLANS (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
BENEFIT PLAN [Abstract]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	0.25%	0.25%	0.25%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	1.00%	1.00%	1.00%
Defined Contribution Plan, Employer Match Safe Harbor			3.00%

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Percentage employer matches of the employee's percentage contribution matched.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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