COMPONENTS OF QUARTERLY AND YEAR TO DATE NET PERIODIC BENEFIT COSTS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Qualified Pension [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	$ 349,404	$ 323,351	$ 698,808	$ 646,702
Interest cost on projected benefit obligation	408,621	406,110	817,242	812,220
Expected return on plan assets	(727,172)	(663,493)	(1,454,344)	(1,326,986)
Amortization of unrecognized transition obligation	0	0	0	0
Amortization of unrecognized prior service benefit	3,464	3,464	6,928	6,928
Amortization of unrecognized net loss	390,683	330,568	781,366	661,136
Net periodic pension expense	425,000	400,000	850,000	800,000
Supplemental Pension [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	10,390	8,692	20,008	17,384
Interest cost on projected benefit obligation	12,436	12,773	23,950	25,546
Expected return on plan assets	0	0	0	0
Amortization of unrecognized prior service benefit	0	0	0	0
Amortization of unrecognized net loss	8,906	4,980	17,150	9,960
Net periodic pension expense	31,732	26,445	61,108	52,890
Postretirement, Medical and Life [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, benefits earned during the period	13,059	8,750	24,061	17,500
Interest cost on projected benefit obligation	17,296	18,000	31,869	36,000
Expected return on plan assets	0	0	0	0
Amortization of unrecognized prior service benefit	(24,250)	(24,250)	(48,500)	(48,500)
Amortization of unrecognized net loss	1,395	0	2,570	0
Net periodic pension expense	$ 7,500	$ 2,500	$ 10,000	$ 5,000