Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Details)

v3.8.0.1
Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Intangible Assets    
Intangible Assets, Gross $ 7,706 $ 7,706
Accumulated Amortization 7,295 7,055
Intangible Assets, Net 411 651
Amortization expense 300 300
Expected future amortization expense of intangible assets    
2019 224  
2020 187  
Intangible Assets, Net $ 411 $ 651
Manufacturing license    
Intangible Assets    
Weighted Average Amortization Period 17 years 17 years
Intangible Assets, Gross $ 3,700 $ 3,700
Accumulated Amortization $ 3,700 3,684
Intangible Assets, Net   16
Expected future amortization expense of intangible assets    
Intangible Assets, Net   $ 16
Technology    
Intangible Assets    
Weighted Average Amortization Period 10 years 10 years
Intangible Assets, Gross $ 2,240 $ 2,240
Accumulated Amortization 1,829 1,605
Intangible Assets, Net 411 635
Expected future amortization expense of intangible assets    
Intangible Assets, Net 411 635
Trade Name and Parts, Service and TA100 Customer Relationships    
Intangible Assets    
Intangible Assets, Gross 1,766 1,766
Accumulated Amortization $ 1,766 $ 1,766
Minimum | Trade Name and Parts, Service and TA100 Customer Relationships    
Intangible Assets    
Weighted Average Amortization Period 1 year 2 months 12 days 1 year 2 months 12 days
Maximum | Trade Name and Parts, Service and TA100 Customer Relationships    
Intangible Assets    
Weighted Average Amortization Period 5 years 5 years