EQUIPMENT AND LEASEHOLD IMPROVEMENTS (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross, excluding construction in-progress	$ 16,750,000		$ 16,750,000		$ 15,976,000
Less accumulated depreciation and amortization	(10,853,000)		(10,853,000)		(10,496,000)
Construction in-progress	5,033,000		5,033,000		3,355,000
Equipment and leasehold improvements, net	10,930,000		10,930,000		8,835,000
Loss on disposal of assets	21,000	13,000	26,000	35,000
Interest capitalized	55,000	0	98,000	0
Equipment
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	7,782,000		7,782,000		7,455,000
Equipment | Minimum
Equipment and leasehold improvements, net
Estimated useful lives			3 years
Equipment | Maximum
Equipment and leasehold improvements, net
Estimated useful lives			10 years
Leasehold improvements
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	8,751,000		8,751,000		8,313,000
Leasehold improvements | Minimum
Equipment and leasehold improvements, net
Estimated useful lives			10 years
Leasehold improvements | Maximum
Equipment and leasehold improvements, net
Estimated useful lives			25 years
Furniture and fixtures
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	$ 217,000		$ 217,000		$ 208,000
Furniture and fixtures | Minimum
Equipment and leasehold improvements, net
Estimated useful lives			3 years
Furniture and fixtures | Maximum
Equipment and leasehold improvements, net
Estimated useful lives			7 years