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Goodwill, Long-lived Assets and Other Intangibles Long-lived Assets and Other Intangibles (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Jan. 31, 2021
Finite-Lived Intangible Assets [Line Items]          
Long-lived asset impairment loss $ 0 $ 0 $ 0 $ 0  
Finite-Lived Intangible Assets, Accumulated Amortization (20,879)   (20,879)   $ (19,678)
Intangible Assets, Gross (Excluding Goodwill) 68,349   68,349   64,263
Intangible assets, net 47,470   47,470   44,585
Indefinite-live In-process Research and Development [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Accumulated Amortization 0   0   0
Indefinite-lived Intangible Assets (Excluding Goodwill) 25,777   25,777   31,575
Technology-Based Intangible Assets [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 15,639   15,639   9,263
Finite-Lived Intangible Assets, Accumulated Amortization (8,607)   (8,607)   (8,304)
Finite-Lived Intangible Assets, Net 7,032   7,032   959
Customer-Related Intangible Assets [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 16,113   16,113   16,128
Finite-Lived Intangible Assets, Accumulated Amortization (8,903)   (8,903)   (8,248)
Finite-Lived Intangible Assets, Net 7,210   7,210   7,880
Computer Software, Intangible Asset          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 1,439   1,439   0
Finite-Lived Intangible Assets, Accumulated Amortization 0   0   0
Finite-Lived Intangible Assets, Net 1,439   1,439   0
Patents [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 9,381   9,381   7,297
Finite-Lived Intangible Assets, Accumulated Amortization (3,369)   (3,369)   (3,126)
Finite-Lived Intangible Assets, Net 6,012   $ 6,012   $ 4,171
IPR&D placed in service [Member]          
Finite-Lived Intangible Assets [Line Items]          
Indefinite-lived Intangible Assets, project completed and placed in-service as definite-lived intangibles $ 6,400        
Finite-Lived Intangible Asset, Useful Life     7 years