LONG-TERM DEBT (Details) (USD $)			0 Months Ended	6 Months Ended		0 Months Ended		6 Months Ended		6 Months Ended				1 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Aug. 14, 2012 Term loan agreement, maturing on August 14, 2032	Sep. 30, 2013 Term loan agreement, maturing on August 14, 2032	Sep. 30, 2013 Term loan agreement, maturing on August 14, 2032 Minimum	Aug. 14, 2012 Term loan agreement, promissory note one	Aug. 14, 2012 Term loan agreement, promissory note two	Sep. 30, 2013 Equipment loans with John Deere item	Mar. 31, 2013 Equipment loans with John Deere	Sep. 30, 2013 Equipment loans with John Deere Maximum item	Sep. 30, 2013 Term loan agreement with John Deere, maturing in May, 2015	Sep. 30, 2013 Term loan agreement with John Deere, maturing in November, 2015	Sep. 30, 2013 Term loan agreement with John Deere, maturing in June, 2016	Sep. 30, 2011 Term loan agreement with Nissan Motor Acceptance Corporation, maturing on September 13, 2016 item	Sep. 30, 2013 Term loan agreement with Nissan Motor Acceptance Corporation, maturing on September 13, 2016	Mar. 31, 2013 Term loan agreement with Nissan Motor Acceptance Corporation, maturing on September 13, 2016
Long-term debt
Total principal payments	$ 5,553,000	$ 5,582,000		$ 5,486,000				$ 55,000	$ 66,000		$ 18,000	$ 16,000	$ 21,000
Less current maturities	(199,000)	(128,000)
Long-term debt, excluding current maturities	5,354,000	5,454,000
Amount borrowed			5,500,000			2,250,000	3,250,000	103,000						23,000
Period for which interest is payable				12 months
Period over which obligation fully amortizes				19 years
Reference rate (as a percent)				3.25%
Variable interest rate margin (as a percent)				1.00%
Annual interest rate (as a percent)					5.50%
Prepayment penalty (as a percent)				5.00%
Reduction in prepayment penalty each year (as a percent)				1.00%
One-time origination and guaranty fees				214,500
Annual renewal fee payable (as a percent)				0.25%
Conditionally guaranteed portion of the loan (as a percent)				80.00%
Number of equal monthly payments										48				60
Interest rate (as a percent)								0.00%							0.00%
Number of equipment loans								3
Imputed interest rate (as a percent)															2.00%
Face value of term loan															13,000	15,000
Unamortized discount								$ 1,000	$ 2,000						$ 400	$ 600