Quarterly report pursuant to Section 13 or 15(d)

Intangibles Assets (Details 2)

v3.20.4
Intangibles Assets (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2020
Mar. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Net $ 1,933 $ 2,728
Finite-Lived Intangible Assets, Accumulated Amortization (71,985) (71,190)
Finite-Lived Intangible Assets, Gross 73,918 73,918
Order or Production Backlog [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Net 0 0
Finite-Lived Intangible Assets, Accumulated Amortization (1,530) (1,530)
Finite-Lived Intangible Assets, Gross 1,530 1,530
Customer-Related Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Net 971 1,388
Finite-Lived Intangible Assets, Accumulated Amortization (22,289) (21,872)
Finite-Lived Intangible Assets, Gross 23,260 23,260
License [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Net 565 683
Finite-Lived Intangible Assets, Accumulated Amortization (1,385) (1,267)
Finite-Lived Intangible Assets, Gross 1,950 1,950
Technology-Based Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Net 397 657
Finite-Lived Intangible Assets, Accumulated Amortization (44,798) (44,538)
Finite-Lived Intangible Assets, Gross 45,195 45,195
Noncompete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Net 0 0
Finite-Lived Intangible Assets, Accumulated Amortization (510) (510)
Finite-Lived Intangible Assets, Gross 510 510
Trademarks and Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Net 0 0
Finite-Lived Intangible Assets, Accumulated Amortization (1,473) (1,473)
Finite-Lived Intangible Assets, Gross $ 1,473 $ 1,473