Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.8.0.1
Basis of Presentation (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 02, 2017
USD ($)
agreement
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
agreement
Sep. 30, 2016
USD ($)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Net loss   $ 3,667 $ 5,865 $ 7,760 $ 10,382    
Cash used in operating activities       5,852 10,027    
Cash, cash equivalents and restricted cash   15,156 $ 16,112 15,156 $ 16,112 $ 19,705 $ 16,706
Outstanding borrowings   9,575   $ 9,575   11,533  
Bridge Bank              
Number of secured credit facilities | agreement 2            
Term of credit agreements 2 years            
Wells Fargo              
Number of credit and security agreements | agreement       2      
Credit Facility | Bridge Bank              
Outstanding borrowings   9,600   $ 9,600      
Maximum borrowing capacity under facility $ 12,000            
Credit Facility | Wells Fargo              
Outstanding borrowings   6,200   6,200   $ 11,500  
Maximum borrowing capacity under facility   20,000   20,000      
Doubt about Company’s ability to meet obligations for next 12 months              
Net loss   3,700          
Cash used in operating activities   5,100          
Cash, cash equivalents and restricted cash   15,200   15,200      
Doubt about Company’s ability to meet obligations for next 12 months | Credit Facility              
Outstanding borrowings   $ 9,600   $ 9,600