LONG-TERM OBLIGATIONS (Detail Textuals) (USD $) In Millions, unless otherwise specified			12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 First Tennessee Bank National Association Revolving Credit Facility	Dec. 21, 2011 First Tennessee Bank National Association Revolving Credit Facility	Apr. 06, 2010 First Tennessee Bank National Association Revolving Credit Facility	Dec. 31, 2012 First Tennessee Bank National Association Revolving Credit Facility Minimum	Dec. 31, 2012 First Tennessee Bank National Association Revolving Credit Facility Maximum
Line of Credit Facility [Line Items]
Revolving credit facility				$ 25.0	$ 20.0
Description of reference rate basis			LIBOR Market Index Rate
Variable interest rate in addition to reference rate			1.50%
Non-usage fee for current loan agreement in annual amount percentage						0.15%	0.35%
Interest rate			1.71%
Weighted average interest rate on equipment notes	4.40%	4.40%