Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.6.0.2
Basis of Presentation (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Nov. 06, 2015
$ / shares
Dec. 31, 2016
USD ($)
$ / shares
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
$ / shares
Dec. 31, 2015
USD ($)
Mar. 31, 2016
USD ($)
$ / shares
Mar. 31, 2015
USD ($)
Loss from operations   $ (10,129) $ (5,856) $ (20,214) $ (19,325)    
Provision for warranty expenses       6,462 266    
Cash and cash equivalents   14,361 $ 13,470 14,361 $ 13,470 $ 11,704 $ 32,221
Cash and cash equivalents including restricted cash   19,400   19,400   16,700  
Cash and cash equivalents and restricted cash excluding outstanding credit facility   $ 10,700   $ 10,700   $ 7,200  
Minimum period for which cash and cash equivalents are believed to be sufficient to meet the entity's cash needs   12 months          
Common stock, par value (in dollars per share) | $ / shares   $ 0.001   $ 0.001   $ 0.001  
Reverse Stock Split              
Stock split ratio 0.05            
Common stock, par value (in dollars per share) | $ / shares $ 0.001            
C200              
Provision for warranty expenses   $ 5,200