ACCUMULATED OTHER COMPREHENSIVE INCOME OR LOSS (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	$ (2,623,198)		$ (1,146,084)		$ (2,806,929)		$ (1,441,378)
Other comprehensive income before reclassification	(1,991,182)		97,983		(2,034,375)		382,446
Amounts reclassified from accumulated other comprehensive income	239,333		192,075		466,257		202,906
Net current period other comprehensive income	(1,751,849)		290,058		(1,568,118)		585,352
Balance at end of period	(4,375,047)		(856,026)		(4,375,047)		(856,026)
Reclassification out of accumulated other comprehensive income [Abstract]
Net gain on securities transactions	1,228		2,750		1,228		299,919
Pension and other employee benefits	1,364,523		1,466,537		2,788,999		2,756,477
Income tax expense	1,306,325		1,115,282		2,477,334		3,013,828
Net of tax	2,654,607		2,444,040		5,066,375		6,058,573
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Net of tax	(239,333)		(192,075)		(466,257)		(202,906)
Unrealized Gains and Losses on Securities Available for Sale [Member]
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	7,979,597		8,088,581		8,022,790		7,987,055
Other comprehensive income before reclassification	(1,991,182)		97,983		(2,034,375)		382,446
Amounts reclassified from accumulated other comprehensive income	(756)		(1,693)		(756)		(184,630)
Net current period other comprehensive income	(1,991,938)		96,290		(2,035,131)		197,816
Balance at end of period	5,987,659		8,184,871		5,987,659		8,184,871
Unrealized Gains and Losses on Securities Available for Sale [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Net gain on securities transactions	1,228		2,750		1,228		299,919
Income tax expense	472		1,057		472		115,289
Net of tax	756		1,693		756		184,630
Defined Benefit Plans and Other Benefit Plans [Member]
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	(10,602,795)		(9,234,665)		(10,829,719)		(9,428,433)
Other comprehensive income before reclassification	0		0		0		0
Amounts reclassified from accumulated other comprehensive income	240,089		193,768		467,013		387,536
Net current period other comprehensive income	240,089		193,768		467,013		387,536
Balance at end of period	(10,362,706)		(9,040,897)		(10,362,706)		(9,040,897)
Defined Benefit Plans and Other Benefit Plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Income tax expense	140,109		120,994		292,501		241,988
Net of tax	(240,089)		(193,768)		(467,013)		(387,536)
Defined benefit plans and other benefit plans prior service cost [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Pension and other employee benefits	20,786	[1]	20,786	[1]	41,572	[1]	41,572	[1]
Defined Benefit plans and other benefit plans actuarial losses [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Pension and other employee benefits	$ (400,984)	[1]	$ (335,548)	[1]	$ (801,086)	[1]	$ (671,096)	[1]

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension and other benefit plan costs (see Note 10 for additional information).