FINANCING ARRANGEMENTS (Details) (USD $)	6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Line of credit	Jun. 30, 2012 Line of credit	May 02, 2012 Line of credit	Jun. 30, 2012 Real estate term loan	Jun. 30, 2012 Real estate term loan	Jun. 30, 2012 Real estate term note maturing on March 31, 2027	May 02, 2012 Real estate term note expiring on May 31, 2012	Jun. 30, 2012 Term loan Maximum
Financing arrangements
Variable rate basis	LIBOR			LIBOR			LIBOR
Maximum borrowing capacity					$ 13,500,000
Debt instrument, face amount								1,800,000	900,000	2,000,000
Weighted-average interest rate (as a percent)			3.70%	3.80%		3.60%	3.90%
Outstanding balance	8,268,737	9,345,044	8,300,000	8,300,000
Unused availability supported by entity's borrowing base			$ 4,300,000	$ 4,300,000