PROPERTY, PLANT AND EQUIPMENT (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Property, plant and equipment
Subtotal	$ 410,728,000	$ 416,302,000
Less: accumulated depreciation	(122,293,000)	(113,307,000)
Total property, plant and equipment, net	288,435,000	302,995,000
Depreciation expense	31,900,000	22,500,000	8,700,000
Impairment of assets	3,346,000	45,800,000
Proceeds from sale of property, plant and equipment	193,000	35,000	395,000
Land
Property, plant and equipment
Subtotal	8,357,000	8,891,000
Reclassification of property plant and equipment		700,000
Building and improvements
Property, plant and equipment
Subtotal	141,092,000	127,583,000
Furniture, fixture and equipment
Property, plant and equipment
Subtotal	197,743,000	189,262,000
Reclassification of property plant and equipment		11,500,000
Furniture, fixture and equipment | Maximum
Property, plant and equipment
Carrying value at the time of disposition	100,000	100,000
Proceeds from sale of property, plant and equipment	100,000	100,000
Leasehold improvements
Property, plant and equipment
Subtotal	24,137,000	45,798,000
Construction in progress
Property, plant and equipment
Subtotal	$ 39,399,000	$ 44,768,000