Concentration of Business (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2020 USD ($) tannery	Jun. 30, 2019 USD ($)	Mar. 31, 2020 USD ($)
Concentration Risk [Line Items]
Net sales	$ 283,169	$ 276,839
Number of tanneries | tannery	2
Long-lived assets	$ 209,074		$ 209,037
Sales Revenue, Net | International net sales
Concentration Risk [Line Items]
Net sales	$ 98,869	$ 109,544
Concentration risk (as a percent)	34.90%	39.60%
Sales Revenue, Net | Net sales in foreign currencies
Concentration Risk [Line Items]
Net sales	$ 55,683	$ 59,358
Concentration risk (as a percent)	19.70%	21.40%
Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk (as a percent)	22.10%	27.20%
US
Concentration Risk [Line Items]
Long-lived assets	$ 195,023		194,679
Foreign
Concentration Risk [Line Items]
Long-lived assets	$ 14,051		$ 14,358