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EMPLOYEE BENEFIT PLANS (Details 7) (USD $)	12 Months Ended														12 Months Ended
EMPLOYEE BENEFIT PLANS (Details 7) (USD $)	Dec. 31, 2012 Defined Benefit Pension Plan	Dec. 31, 2010 Defined Benefit Pension Plan	Dec. 31, 2012 Defined Benefit Pension Plan Collective short-term investment fund	Dec. 31, 2011 Defined Benefit Pension Plan Collective short-term investment fund	Dec. 31, 2012 Defined Benefit Pension Plan Collective investment funds	Dec. 31, 2011 Defined Benefit Pension Plan Collective investment funds	Dec. 31, 2012 Defined Benefit Pension Plan Group deposit administration annuity contract	Dec. 31, 2011 Defined Benefit Pension Plan Group deposit administration annuity contract	Dec. 31, 2012 Defined Benefit Pension Plan Level 2	Dec. 31, 2011 Defined Benefit Pension Plan Level 2	Dec. 31, 2012 Defined Benefit Pension Plan Level 2 Collective short-term investment fund	Dec. 31, 2011 Defined Benefit Pension Plan Level 2 Collective short-term investment fund	Dec. 31, 2012 Defined Benefit Pension Plan Level 2 Collective investment funds	Dec. 31, 2011 Defined Benefit Pension Plan Level 2 Collective investment funds	Dec. 31, 2012 Defined Benefit Pension Plan Level 3	Dec. 31, 2011 Defined Benefit Pension Plan Level 3	Dec. 31, 2012 Defined Benefit Pension Plan Level 3 Group deposit administration annuity contract	Dec. 31, 2011 Defined Benefit Pension Plan Level 3 Group deposit administration annuity contract	Dec. 31, 2012 Group life insurance plan Money Market Fund	Dec. 31, 2011 Group life insurance plan Money Market Fund	Dec. 31, 2010 Group life insurance plan Money Market Fund	Dec. 31, 2012 Group life insurance plan Level 1 Money Market Fund	Dec. 31, 2011 Group life insurance plan Level 1 Money Market Fund
Fair value hierarchy of Plan's assets
Total investments	$ 152,187,000	$ 117,856,000	$ 6,222,000	$ 1,004,000	$ 95,933,000	$ 82,527,000	$ 50,032,000	$ 41,527,000	$ 102,155,000	$ 83,531,000	$ 6,222,000	$ 1,004,000	$ 95,933,000	$ 82,527,000	$ 50,032,000	$ 41,527,000	$ 50,032,000	$ 41,527,000	$ 6,174,000	$ 6,193,000	$ 6,217,000	$ 6,174,000	$ 6,193,000
Amount transferred into level 3 from level 2	6,000,000
Reconciliation of beginning and ending balances for fair value measurements for which significant unobservable inputs (level 3) are used
Fair value of plan assets at beginning of year	125,058,000	117,856,000	6,222,000	1,004,000	95,933,000	82,527,000	50,032,000	41,527,000	102,155,000	83,531,000	6,222,000	1,004,000	95,933,000	82,527,000	41,527,000	39,403,000	50,032,000	41,527,000	6,174,000	6,193,000	6,217,000	6,174,000	6,193,000
Interest income															2,505,000	2,124,000
Transfers from collective short-term investments fund															6,000,000
Fair value of plan assets at end of year	$ 152,187,000	$ 117,856,000	$ 6,222,000	$ 1,004,000	$ 95,933,000	$ 82,527,000	$ 50,032,000	$ 41,527,000	$ 102,155,000	$ 83,531,000	$ 6,222,000	$ 1,004,000	$ 95,933,000	$ 82,527,000	$ 50,032,000	$ 41,527,000	$ 50,032,000	$ 41,527,000	$ 6,174,000	$ 6,193,000	$ 6,217,000	$ 6,174,000	$ 6,193,000

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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