Quarterly report pursuant to Section 13 or 15(d)

Liquidity (Details)

v3.6.0.2
Liquidity (Details) - USD ($)
Sep. 28, 2016
Aug. 26, 2016
Aug. 12, 2016
Jul. 15, 2016
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Debt Instrument [Line Items]                
Cash         $ 5,705,000 $ 11,231,000 $ 13,679,000 $ 7,069,000
Repayments of debt $ 11,000,000              
Silicon Valley Bank                
Debt Instrument [Line Items]                
Repayments of debt 3,000,000   $ 3,000,000          
North Atlantic Capital                
Debt Instrument [Line Items]                
Repayments of debt 8,000,000 $ 8,000,000   $ 8,000,000        
Convertible notes                
Debt Instrument [Line Items]                
Debt face amount $ 16,000,000       $ 16,000,000      
Interest rate 8.75%              
Proceeds from debt $ 14,316,000