Annual report pursuant to Section 13 and 15(d)

Intangible Assets - General Information (Details)

v3.19.2
Intangible Assets - General Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Intangible Assets    
Intangible Assets, Gross $ 7,706 $ 7,706
Accumulated Amortization 7,519 7,295
Intangible Assets, Net 187 411
Amortization expense 200 300
Expected future amortization expense of intangible assets    
2020 187  
Intangible Assets, Net $ 187 $ 411
Manufacturing license    
Intangible Assets    
Weighted Average Amortization Period 17 years 17 years
Intangible Assets, Gross $ 3,700 $ 3,700
Accumulated Amortization $ 3,700 $ 3,700
Technology    
Intangible Assets    
Weighted Average Amortization Period 10 years 10 years
Intangible Assets, Gross $ 2,240 $ 2,240
Accumulated Amortization 2,053 1,829
Intangible Assets, Net 187 411
Expected future amortization expense of intangible assets    
Intangible Assets, Net 187 411
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