LONG-TERM OBLIGATIONS (Details Textuals) (USD $)	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Dec. 21, 2011	Apr. 06, 2010
Line of Credit Facility [Line Items]
Current portion of long-term obligations		$ 5,000
Non-cancelable operating lease obligations	800,000
First Tennessee Bank National Association | Revolving Credit Facility
Line of Credit Facility [Line Items]
Unsecured revolving credit facility			25,000,000	20,000,000
Description of reference rate basis	LIBOR Market Index Rate
Variable interest rate in addition to reference rate	1.50%
Credit facility outstanding borrowings	$ 0	$ 0
Interest rate	1.71%
First Tennessee Bank National Association | Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Non-usage fee for current loan agreement in annual amount percentage	0.15%
First Tennessee Bank National Association | Revolving Credit Facility | Maximum
Line of Credit Facility [Line Items]
Non-usage fee for current loan agreement in annual amount percentage	0.35%