COMPONENTS OF QUARTERLY AND YEAR TO DATE NET PERIODIC BENEFIT COSTS (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Qualified Pension [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	$ 349,404	$ 323,351
Interest cost on projected benefit obligation	408,621	406,110
Expected return on plan assets	(727,172)	(663,493)
Amortization of unrecognized transition obligation	0	0
Amortization of unrecognized prior service benefit	3,464	3,464
Amortization of unrecognized net loss	379,990	330,568
Net periodic pension expense	414,307	400,000
Supplemental Pension [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	9,618	8,692
Interest cost on projected benefit obligation	11,513	12,773
Expected return on plan assets	0	0
Amortization of unrecognized prior service benefit	0	0
Amortization of unrecognized net loss	8,244	4,980
Net periodic pension expense	29,375	26,445
Postretirement, Medical and Life [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	11,002	8,750
Interest cost on projected benefit obligation	14,573	18,000
Expected return on plan assets	0	0
Amortization of unrecognized prior service benefit	(24,250)	(24,250)
Amortization of unrecognized net loss	1,175	0
Net periodic pension expense	$ 2,500	$ 2,500