COMPONENTS OF QUARTERLY AND YEAR TO DATE NET PERIODIC BENEFIT COSTS (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Qualified Pension [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	$ 349,404	$ 323,351	$ 1,048,212	$ 970,053
Interest cost on projected benefit obligation	408,621	406,110	1,225,863	1,218,330
Expected return on plan assets	(727,172)	(663,493)	(2,181,516)	(1,990,479)
Amortization of unrecognized transition obligation	0	0	0	0
Amortization of unrecognized prior service benefit	3,464	3,464	10,392	10,392
Amortization of unrecognized net loss	390,683	330,568	1,172,049	991,704
Net periodic pension expense	425,000	400,000	1,275,000	1,200,000
Supplemental Pension [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	10,004	8,692	30,012	26,076
Interest cost on projected benefit obligation	11,974	12,773	35,924	38,320
Expected return on plan assets	0	0	0	0
Amortization of unrecognized prior service benefit	0	0	0	0
Amortization of unrecognized net loss	8,575	4,980	25,725	14,940
Net periodic pension expense	30,553	26,445	91,661	79,336
Postretirement, Medical and Life [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	12,045	8,750	36,106	26,250
Interest cost on projected benefit obligation	15,955	18,000	47,824	54,000
Expected return on plan assets	0	0	0	0
Amortization of unrecognized prior service benefit	(24,250)	(24,250)	(72,750)	(72,750)
Amortization of unrecognized net loss	1,250	0	3,820	0
Net periodic pension expense	$ 5,000	$ 2,500	$ 15,000	$ 7,500