Concentration of Business (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018 USD ($) supplier tannery	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) supplier tannery	Dec. 31, 2017 USD ($)	Mar. 31, 2018 USD ($)
Concentration Risk [Line Items]
Net sales	$ 873,800	$ 810,478	$ 1,626,307	$ 1,502,655
Number of tanneries | tannery	2		2
Number of suppliers | supplier	2		2
Long-lived assets	$ 215,560		$ 215,560		$ 220,162
Sales Revenue, Net | International Net Sales
Concentration Risk [Line Items]
Net sales	$ 300,785	$ 308,828	$ 599,992	$ 577,615
Concentration risk (as a percent)	34.40%	38.10%	36.90%	38.40%
Sales Revenue, Net | Net Sales in Foreign Currencies
Concentration Risk [Line Items]
Net sales	$ 262,768	$ 282,119	$ 489,781	$ 491,547
Concentration risk (as a percent)	30.10%	34.80%	30.10%	32.70%
Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk (as a percent)	26.20%	25.50%	25.40%	26.10%
Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk (as a percent)			17.80%	21.60%
US
Concentration Risk [Line Items]
Long-lived assets	$ 198,714		$ 198,714		203,956
All other countries
Concentration Risk [Line Items]
Long-lived assets	$ 16,846		$ 16,846		$ 16,206