Concentration of Business, Significant Customers and Credit Risk (Details) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 31, 2016 USD ($) supplier tannery	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) supplier tannery	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) supplier tannery	Dec. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)
Concentration of Business, Significant Customers and Credit Risk [Line Items]
Property and equipment, net	$ 240,618	$ 237,246	$ 240,618		$ 240,618
Number of tanneries | tannery	2		2		2
Number of suppliers | supplier	2		2		2
Cash equivalents	$ 156,483	195,575	$ 156,483		$ 156,483
Cash	139,945	50,381	139,945		139,945
Total cash and cash equivalents	$ 296,428	$ 245,956	$ 296,428	$ 263,009	$ 296,428	$ 263,009	$ 225,143
International net sales
Concentration of Business, Significant Customers and Credit Risk [Line Items]
Concentration risk (as a percent)			35.60%	31.70%	35.90%	34.60%
Customer One | Net trade accounts receivable
Concentration of Business, Significant Customers and Credit Risk [Line Items]
Concentration risk (as a percent)	19.70%	12.80%
UNITED STATES
Concentration of Business, Significant Customers and Credit Risk [Line Items]
Property and equipment, net	$ 217,274	$ 211,111	$ 217,274		$ 217,274
Other Countries
Concentration of Business, Significant Customers and Credit Risk [Line Items]
Property and equipment, net	$ 23,344	$ 26,135	$ 23,344		$ 23,344
Concentration risk (as a percent)			33.60%	28.80%	30.70%	27.90%