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 9 Months Ended
Jun. 02, 2017
USD ($)
agreement
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2017
USD ($)
agreement
Dec. 31, 2016
USD ($)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Net loss   $ 323 $ 10,686 $ 8,083 $ 21,068    
Cash used in operating activities       9,168 15,607    
Cash, cash equivalents and restricted cash   16,522 19,370 16,522 19,370 $ 19,705 $ 16,706
Outstanding borrowings   10,966   $ 10,966   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   11,000   $ 11,000      
Maximum borrowing capacity under facility $ 12,000            
Credit Facility | Wells Fargo              
Outstanding borrowings     $ 8,700   $ 8,700 $ 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   300   8,100      
Cash used in operating activities   3,300   9,200      
Cash, cash equivalents and restricted cash   16,500   16,500      
Doubt about Company’s ability to meet obligations for next 12 months | Credit Facility              
Outstanding borrowings   $ 11,000   $ 11,000