Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Purchase and Lease Commitments (Details)

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Commitments and Contingencies - Purchase and Lease Commitments (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 07, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Mar. 31, 2017
Lease Commitments            
Renewal option period       5 years    
Deferred rent   $ 100,000   $ 100,000   $ 200,000
Rent expense   600,000 $ 600,000 1,100,000 $ 1,200,000  
Inventory            
Commitments and Contingencies            
Commitment to purchase inventories   $ 23,300,000   $ 23,300,000    
Van Nuys Fourth Amendment            
Lease Commitments            
Operating Lease, Extension Term 62 months          
Monthly base rent payable for the first agreed period $ 0          
Monthly base rent payable for the second agreed period 66,846          
Monthly base rent payable for the third agreed period 68,852          
Monthly base rent payable for the fourth agreed period 70,917          
Monthly base rent payable for the fifth agreed period 73,045          
Monthly base rent payable for the sixth agreed period 75,236          
Monthly base rent payable for the seventh agreed period $ 77,493          
Operating Lease, Period Available under Options for Lease Extension 5 years