EMPLOYEE BENEFITS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in benefit obligation:
Benefit obligation at beginning of year	$ 1,919,000	$ 1,999,000
Service cost		149,000
Interest cost		76,000
Benefits paid and expected expenses		(112,000)
Assumption changes and other		(193,000)
Benefit obligation at end of year		1,919,000	1,999,000
Change in plan assets, at fair value:
Employer contribution		112,000
Benefits paid and actual expenses		(112,000)
Amounts recognized in accumulated other comprehensive income
Funded status (plan assets less benefit obligations)		(1,919,000)
Components of net periodic benefit cost and other amounts recognized in Other Comprehensive Income
Service cost		149,000
Interest cost		76,000
Total recognized in other comprehensive income	3,348,000	(1,907,000)	(256,000)
Amortization from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year
Estimated prior service costs	77,000
Average rate of return over the past first year period	1 year
Average rate of return over the past second year period	3 years
Average rate of return over the past third year period	5 years
Average rate of return over the past fourth year period	10 years
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost
Investments for long-term growth (as a percent)	97.00%
Investments for near-term benefit payments (as a percent)	3.00%
Cumulative historical returns for the S&P 500 index (as a percent)	9.80%
Cumulative historical returns for the long term U.S. government bonds (as a percent)	5.00%
Target allocations for Plan assets
Percentage of Plan Assets	100.00%	100.00%
Weighted-Average Expected Long-term Rate of Return (as a percent)		7.50%
Pension Benefits
Change in benefit obligation:
Benefit obligation at beginning of year	13,243,000	13,107,000
Service cost	905,000	931,000	1,131,000
Interest cost	639,000	564,000	508,000
Benefits paid and expected expenses	(282,000)	(236,000)
Assumption changes and other	4,455,000	(1,123,000)
Benefit obligation at end of year	18,960,000	13,243,000	13,107,000
Change in plan assets, at fair value:
Plan assets at beginning of year	21,828,000	17,125,000
Actual return on plan assets	981,000	2,939,000
Employer contribution	1,361,000	2,000,000
Benefits paid and actual expenses	(283,000)	(236,000)
Plan assets at end of year	23,887,000	21,828,000	17,125,000
Amounts recognized in accumulated other comprehensive income
Net actuarial loss	7,631,000	2,559,000
Prior service cost	(869,000)	(946,000)
Net amount recognized	6,762,000	1,613,000
Accumulated benefit obligation	16,700,000	11,900,000
Funded status (plan assets less benefit obligations)	4,927,000	8,585,000
Components of net periodic benefit cost and other amounts recognized in Other Comprehensive Income
Service cost	905,000	931,000	1,131,000
Interest cost	639,000	564,000	508,000
Expected return on plan assets	(1,625,000)	(1,385,000)	(993,000)
Amortization of net loss	27,000	325,000	248,000
Amortization of unrecognized prior service cost	(77,000)	(77,000)	10,000
Net periodic benefit cost (credit)	(131,000)	358,000	904,000
Net (gain) loss	5,099,000	(2,677,000)	(345,000)
Amortization of net loss	(27,000)	(325,000)	(248,000)
Amortization of prior service cost	77,000	77,000	(10,000)
Total recognized in other comprehensive income, before tax	5,149,000	(2,925,000)	(603,000)
Deferred taxes	(2,044,000)	1,161,000	240,000
Total recognized in other comprehensive income	3,105,000	(1,764,000)	(363,000)
Total recognized in net periodic benefit cost and other comprehensive income	2,974,000	(1,406,000)	541,000
Amortization from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year
Estimated net loss	428,000
Estimated transition obligation	0
Weighted Average Assumptions Used to Determine Benefit Obligations
Discount rate (as a percent)	3.90%	4.90%	4.20%
Rate of compensation increase (as a percent)	3.00%	3.00%	3.00%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost
Discount rate (as a percent)	4.90%	4.20%	4.53%
Rate of compensation increase (as a percent)	3.00%	3.00%	3.00%
Expected long-term rate of return (as a percent)	7.50%	7.50%	7.50%
SERP Benefits
Change in benefit obligation:
Benefit obligation at beginning of year	1,919,000
Service cost	132,000	149,000	120,000
Interest cost	88,000	76,000	52,000
Benefits paid and expected expenses	(112,000)
Assumption changes and other	430,000
Benefit obligation at end of year	2,457,000	1,919,000
Change in plan assets, at fair value:
Employer contribution	112,000
Benefits paid and actual expenses	(112,000)
Amounts recognized in accumulated other comprehensive income
Net actuarial loss	628,000	198,000
Transition obligation	87,000	114,000
Net amount recognized	715,000	312,000
Accumulated benefit obligation	1,900,000	1,500,000
Funded status (plan assets less benefit obligations)	(2,457,000)
Components of net periodic benefit cost and other amounts recognized in Other Comprehensive Income
Service cost	132,000	149,000	120,000
Interest cost	88,000	76,000	52,000
Amortization of unrecognized transition obligation	28,000	43,000	30,000
Net periodic benefit cost (credit)	248,000	268,000	202,000
Net (gain) loss	430,000	(193,000)	208,000
Amortization of transition obligation	(27,000)	(43,000)	(30,000)
Total recognized in other comprehensive income, before tax	403,000	(236,000)	178,000
Deferred taxes	(160,000)	93,000	(71,000)
Total recognized in other comprehensive income	243,000	(143,000)	107,000
Total recognized in net periodic benefit cost and other comprehensive income	491,000	125,000	309,000
Amortization from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year
Estimated net loss		32,000
Estimated transition obligation		$ 28,000
Weighted Average Assumptions Used to Determine Benefit Obligations
Discount rate (as a percent)	3.80%	4.70%	3.90%
Rate of compensation increase (as a percent)	5.00%	5.00%	5.00%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost
Discount rate (as a percent)	4.70%	3.90%	3.13%
Rate of compensation increase (as a percent)	5.00%	5.00%	5.00%
Cash Equivalents
Target allocations for Plan assets
Target Allocation, minimum (as a percent)	0.00%
Target Allocation, maximum (as a percent)	5.00%
Percentage of Plan Assets	4.10%	3.90%
Equity Securities
Target allocations for Plan assets
Target Allocation, minimum (as a percent)	45.00%
Target Allocation, maximum (as a percent)	65.00%
Percentage of Plan Assets	62.10%	59.30%
Weighted-Average Expected Long-term Rate of Return (as a percent)		4.90%
Fixed income securities
Target allocations for Plan assets
Target Allocation, minimum (as a percent)	35.00%
Target Allocation, maximum (as a percent)	55.00%
Percentage of Plan Assets	33.80%	36.80%
Weighted-Average Expected Long-term Rate of Return (as a percent)		2.60%