Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets Intangible Assets (Details)

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Goodwill and Other Intangible Assets Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Mar. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Accumulated Amortization $ 67,627 $ 59,986
Intangible Assets, Gross (Excluding Goodwill) 156,288 163,984
Intangible Assets, Net (Excluding Goodwill) 88,661 103,998
Developed Technology Rights    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 9,734 9,950
Finite-Lived Intangible Assets, Accumulated Amortization 3,305 2,988
Finite-Lived Intangible Assets, Net 6,429 6,962
Customer Relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 99,197 105,720
Finite-Lived Intangible Assets, Accumulated Amortization 61,697 54,913
Finite-Lived Intangible Assets, Net 37,500 50,807
Other Intangible Assets    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 2,625 2,631
Finite-Lived Intangible Assets, Accumulated Amortization 2,175 1,848
Finite-Lived Intangible Assets, Net 450 783
Trademarks    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 44,294 45,234
Finite-Lived Intangible Assets, Accumulated Amortization 450 237
Finite-Lived Intangible Assets, Net 43,844 44,997
Certification Marks    
Acquired Finite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets (Excluding Goodwill) $ 438 $ 449