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SUMMARY OF ACCOUNTING POLICIES (Details) (USD $)
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
business
Mar. 31, 2012
Concentration of credit risk      
Number of non-core businesses finalized for sale   2  
Revenue Recognition      
Research and development costs     $ 78,900,000
Allowance for doubtful accounts      
Balance at Beginning of Year 10,877,000 38,905,000 13,222,000
Charged to Costs and Expenses 2,029,000 6,643,000 30,122,000
Deductions/Write-offs (7,377,000) (34,671,000) (4,439,000)
Balance at End of Year 5,529,000 10,877,000 38,905,000
Amount of direct deductions/write-downs for accounts receivable balances reclassified to non-current assets and carried net of specific reserve   5,800,000 3,900,000
Provision for doubtful accounts related to a distressed customer     28,000,000
Provision for doubtful accounts related to discontinued operations     $ 200,000
Services Revenue | Maximum
     
Concentration of credit risk      
Concentration risk percentage 10.00%    
Net sales | Customer concentration risk | Customer one
     
Concentration of credit risk      
Concentration risk percentage 13.00%   11.00%
Net sales | Customer concentration risk | Customer two
     
Concentration of credit risk      
Concentration risk percentage     10.00%
Net sales | Customer concentration risk | Ten largest customers
     
Concentration of credit risk      
Concentration risk percentage 52.00% 47.00% 55.00%
Accounts Receivable | Customer one
     
Concentration of credit risk      
Concentration risk percentage 14.00%