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, 2017
Mar. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, accumulated amortization $ 79,122 $ 70,925
Intangible assets, gross 162,068 157,103
Intangible assets, net 82,946 86,178
Certifications    
Finite-Lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets (excluding goodwill) 458 442
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 46,152 44,563
Finite-lived intangible assets, accumulated amortization 657 521
Finite-lived intangible assets, net carrying amount 45,495 44,042
Developed technology    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 10,159 9,796
Finite-lived intangible assets, accumulated amortization 3,844 3,454
Finite-lived intangible assets, net carrying amount 6,315 6,342
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 102,660 99,676
Finite-lived intangible assets, accumulated amortization 72,206 64,682
Finite-lived intangible assets, net carrying amount 30,454 34,994
Other    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross carrying amount 2,639 2,626
Finite-lived intangible assets, accumulated amortization 2,415 2,268
Finite-lived intangible assets, net carrying amount $ 224 $ 358