Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

v3.10.0.1
Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Mar. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 36,975 $ 31,516
Work in process 6,960 7,186
Finished goods 32,484 27,204
Inventories, gross 76,419 65,906
Valuation reserves (2,164) (2,077)
Inventories, net $ 74,255 $ 63,829