BORROWINGS (Details) (USD $)			12 Months Ended			15 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Revolving credit facility, cash-collateralized	Dec. 31, 2012 Revolving credit facility	Dec. 31, 2011 Revolving credit facility	Dec. 27, 2011 Master Lease Agreement item	Dec. 31, 2012 Purchasing Card	Dec. 31, 2011 Purchasing Card
Borrowings
Maximum borrowing capacity			$ 3,000,000	$ 20,000,000
Variable rate basis			one-month LIBOR	one-month LIBOR
Interest rate margin on variable rate basis (as a percent)			1.00%	2.50%
Cap for variable rate base (as a percent)				0.50%
Amounts outstanding		17,000,000		0	17,000,000
Letters of credit, outstanding amount	1,800,000	2,000,000
Number of leases						4
Term of lease agreement						48 months
Proceeds from sale leaseback transaction						16,400,000
Number of additional leases						11
IT Assets leased						8,200,000
Amount to be paid at end of lease term to repurchase leased assets						1.00
Weighted average effective interest rate						6.29%
Amount paid at early retirement of debt						20,100,000
Loss on early retirement of debt						1,200,000
Outstanding balance							3,900,000	3,400,000
Unused borrowing capacity							$ 1,100,000	$ 1,600,000