Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Details 1)

v3.21.1
Intangible Assets (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 73,918 $ 73,918
Finite-Lived Intangible Assets, Accumulated Amortization (72,776) (71,190)
Finite-Lived Intangible Assets, Net 1,142 2,728
Backlog [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 1,530 1,530
Finite-Lived Intangible Assets, Accumulated Amortization (1,530) (1,530)
Finite-Lived Intangible Assets, Net 0 0
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 23,260 23,260
Finite-Lived Intangible Assets, Accumulated Amortization (22,428) (21,872)
Finite-Lived Intangible Assets, Net 832 1,388
Product Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 45,195 45,195
Finite-Lived Intangible Assets, Accumulated Amortization (44,885) (44,538)
Finite-Lived Intangible Assets, Net 310 657
Noncompete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 510 510
Finite-Lived Intangible Assets, Accumulated Amortization (510) (510)
Finite-Lived Intangible Assets, Net 0 0
Trademarks and Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 1,473 1,473
Finite-Lived Intangible Assets, Accumulated Amortization (1,473) (1,473)
Finite-Lived Intangible Assets, Net 0 0
License    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 1,950 1,950
Finite-Lived Intangible Assets, Accumulated Amortization (1,950) (1,267)
Finite-Lived Intangible Assets, Net $ 0 $ 683