Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Accounting Policy Information (Details)

v3.5.0.2
Basis of Presentation and Accounting Policy Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Business Acquisition [Line Items]        
Marketing, general and administrative and engineering $ 20,224 $ 19,005 $ 39,332 $ 38,854