DEBT AND CREDIT AGREEMENTS (Details) (USD $) In Thousands, unless otherwise specified						0 Months Ended	3 Months Ended						3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 New Markets Tax Credit Transaction	Mar. 31, 2013 Term loans and notes payable	Dec. 31, 2012 Term loans and notes payable	Aug. 22, 2012 Credit facility	Mar. 31, 2013 Credit facility	Dec. 31, 2012 Credit facility	Aug. 23, 2012 Credit facility	Aug. 23, 2012 Credit facility Minimum	Apr. 05, 2010 Great Western Bank, construction loan	Apr. 28, 2009 Great Western Bank, construction loan	Mar. 31, 2013 Great Western Bank, Term Loan item
Credit Facilities
Long-term debt, gross				$ 3,146	$ 3,308		$ 6,172	$ 955
Less-Current portion	(6,502)	(1,307)
Long-term debt, net of current maturities	2,816	2,956	2,600
Maximum borrowing capacity									20,000		6,500	10,000
Line of credit facilities, term of credit agreements						3 years
Maximum borrowing capacity of the face value of eligible receivables (as a percent)									85.00%
Maximum percentage of book value of inventories that may be financed									50.00%
Variable rate basis						one month LIBOR
Interest rate margin (as a percent)									4.25%
Interest rate (as a percent)										5.25%	8.50%
Annual unused line fee (as a percent)						0.50%
Outstanding indebtedness under the Credit Facility							6,172
Additional ability to borrow up							12,316
Interest rate (as a percent)							5.25%
Number of financial covenants													0
Amount outstanding													$ 3,609