Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details)

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Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, accumulated amortization $ 99,441 $ 89,192
Intangible assets, gross 238,628 240,626
Intangible assets, net 139,187 151,434
Certifications    
Finite-Lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets (excluding goodwill) 452 458
Products    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 64,356 64,611
Finite-lived intangible assets, accumulated amortization 5,899 2,719
Finite-lived intangible assets, net carrying amount 58,457 61,892
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 45,490 46,156
Finite-lived intangible assets, accumulated amortization 921 832
Finite-lived intangible assets, net carrying amount 44,569 45,324
Developed technology    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 10,012 10,160
Finite-lived intangible assets, accumulated amortization 4,291 4,106
Finite-lived intangible assets, net carrying amount 5,721 6,054
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 112,469 113,378
Finite-lived intangible assets, accumulated amortization 82,749 77,646
Finite-lived intangible assets, net carrying amount 29,720 35,732
Other    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 5,849 5,863
Finite-lived intangible assets, accumulated amortization 5,581 3,889
Finite-lived intangible assets, net carrying amount $ 268 $ 1,974