ACCUMULATED OTHER COMPREHENSIVE INCOME OR LOSS (Details) (USD $)	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	$ (2,806,929)		$ (1,441,378)
Other comprehensive income before reclassification	(43,193)		284,463
Amounts reclassified from accumulated other comprehensive income	226,924		10,831
Net current period other comprehensive income	183,731		295,924
Balance at end of period	(2,623,198)		(1,146,084)
Reclassification out of accumulated other comprehensive income [Abstract]
Net gain on securities transactions	0		297,169
Pension and other employee benefits	1,424,476		1,289,940
Income tax expense	1,171,009		1,898,546
Net of tax	2,411,768		3,614,533
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Net of tax	(226,924)		(10,831)
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	8,022,790		7,987,055
Other comprehensive income before reclassification	(43,193)		284,463
Amounts reclassified from accumulated other comprehensive income	0		(182,937)
Net current period other comprehensive income	(43,193)		101,526
Balance at end of period	7,979,597		8,088,581
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	0		297,169
Income tax expense	0		114,232
Net of tax	0		182,937
Defined Benefit Plans and Other Benefit Plans [Member]
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	(10,829,719)		(9,428,433)
Other comprehensive income before reclassification	0		0
Amounts reclassified from accumulated other comprehensive income	226,924		193,768
Net current period other comprehensive income	226,924		193,768
Balance at end of period	(10,602,795)		(9,234,665)
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	141,699		120,994
Net of tax	(226,924)		(193,798)
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]
Defined Benefit plans and other benefit plans actuarial losses [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Pension and other employee benefits	$ (389,409)	[1]	$ (335,548)	[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).