Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) - USD ($)
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Loss Contingencies [Line Items]    
Reserve on Firm Purchase Commitments $ 130,000 $ 146,000
Operating Leases, Rent Expense, Net 900,000 1,200,000
Operating Leases, Income Statement, Sublease Revenue 100,000 200,000
PaymentsForRentReducedRestructuringAccrual 1,200,000 1,500,000
Loss Contingency, Range of Possible Loss, Portion Not Accrued $ 160,000  
CSI office lease [Member]    
Loss Contingencies [Line Items]    
Lease Expiration Date Apr. 30, 2018  
Ohio design lease [Member]    
Loss Contingencies [Line Items]    
Lease Expiration Date Sep. 30, 2019  
Aurora lease [Member]    
Loss Contingencies [Line Items]    
Lease Expiration Date Sep. 30, 2017  
Payments for Rent $ 2,100,000  
Deferred Rent Credit, Noncurrent 59,000 4,000
Deferred Rent Credit, Current $ 4,000 $ 103,000