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EARNINGS PER SHARE (Details) (USD $)	3 Months Ended								12 Months Ended
EARNINGS PER SHARE (Details) (USD $)	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
EARNINGS PER SHARE [Abstract]
Net income for diluted computation	$ 1,919,242us-gaap_NetIncomeLoss	$ 1,394,763us-gaap_NetIncomeLoss	$ 577,966us-gaap_NetIncomeLoss	$ 753,989us-gaap_NetIncomeLoss	$ 1,725,802us-gaap_NetIncomeLoss	$ 1,178,775us-gaap_NetIncomeLoss	$ 1,028,186us-gaap_NetIncomeLoss	$ 1,353,084us-gaap_NetIncomeLoss	$ 4,645,960us-gaap_NetIncomeLoss	$ 5,285,847us-gaap_NetIncomeLoss	$ 2,981,075us-gaap_NetIncomeLoss
Weighted average shares [Abstract]
Basic (in shares)									6,477,457	6,345,615	6,351,245
Effect of dilutive securities [Abstract]
Stock options (in shares)									602,113	576,659	630,282
Diluted (in shares)									7,079,570	6,922,274	6,981,527
Net income per share [Abstract]
Basic (in dollars per share)	$ 0.29us-gaap_EarningsPerShareBasic	$ 0.21us-gaap_EarningsPerShareBasic	$ 0.09us-gaap_EarningsPerShareBasic	$ 0.12us-gaap_EarningsPerShareBasic	$ 0.27us-gaap_EarningsPerShareBasic	$ 0.19us-gaap_EarningsPerShareBasic	$ 0.16us-gaap_EarningsPerShareBasic	$ 0.21us-gaap_EarningsPerShareBasic	$ 0.72us-gaap_EarningsPerShareBasic	$ 0.83us-gaap_EarningsPerShareBasic	$ 0.47us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 0.27us-gaap_EarningsPerShareDiluted	$ 0.20us-gaap_EarningsPerShareDiluted	$ 0.08us-gaap_EarningsPerShareDiluted	$ 0.11us-gaap_EarningsPerShareDiluted	$ 0.25us-gaap_EarningsPerShareDiluted	$ 0.17us-gaap_EarningsPerShareDiluted	$ 0.15us-gaap_EarningsPerShareDiluted	$ 0.19us-gaap_EarningsPerShareDiluted	$ 0.66us-gaap_EarningsPerShareDiluted	$ 0.76us-gaap_EarningsPerShareDiluted	$ 0.43us-gaap_EarningsPerShareDiluted
Potential common shares excluded from diluted loss per share calculation (in shares)									20,000	272,500	272,500