Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details)

v3.10.0.1
Revenue Recognition (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Apr. 01, 2018
Mar. 31, 2018
Assets:            
Prepaid Expense and Other Assets, Current $ 1,131   $ 1,131   $ 888 $ 816
Liabilities:            
Accrued Liabilities, Current 3,235   3,235   3,400 3,328
Deferred revenue 1,095   1,095   1,680 1,790
Deferred revenue non-current 557   557   627 846
Equity [Abstract]            
Retained Earnings (Accumulated Deficit) (331,096)   (331,096)   (329,316) $ (329,645)
Revenue 10,106 $ 17,232 23,143 $ 33,806    
Gross profit 4,193 7,275 10,128 14,042    
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent (1,603) 720 (1,642) 148    
Net income (loss) (1,741) $ 720 (1,780) $ 148    
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]            
Equity [Abstract]            
Revenue 28   55      
Gross profit 28   55      
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent 28   55      
Net income (loss) 28   55      
Calculated under Revenue Guidance in Effect before Topic 606 [Member]            
Assets:            
Prepaid Expense and Other Assets, Current 1,049   1,049      
Liabilities:            
Accrued Liabilities, Current 3,153   3,153      
Deferred revenue 1,205   1,205      
Deferred revenue non-current 721   721      
Equity [Abstract]            
Retained Earnings (Accumulated Deficit) (331,370)   (331,370)      
Revenue 10,134   23,198      
Gross profit 4,221   10,183      
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent (1,575)   (1,587)      
Net income (loss) (1,713)   (1,725)      
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]            
Assets:            
Prepaid Expense and Other Assets, Current (82)   (82)   72  
Liabilities:            
Accrued Liabilities, Current (82)   (82)   72  
Deferred revenue 110   110   (110)  
Deferred revenue non-current 164   164   (219)  
Equity [Abstract]            
Retained Earnings (Accumulated Deficit) $ (274)   (274)   $ 329  
Retained Earnings [Member]            
Equity [Abstract]            
Net income (loss)     $ (1,780)