Leases and Other Commitments - Purchase Obligations (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2021 USD ($)
Future commitments
Outstanding purchase orders	$ 566,820
Contract Value	$ 219,788
Minimum
Future commitments
Advance purchase period	2 months
Maximum
Future commitments
Advance purchase period	9 months
Sheepskin
Future commitments
Remaining Commitment	$ 150,594
Long-term purchase commitment period	2 years
Advance deposit	$ 8,322
Expired agreements, remaining minimum amount committed	28,000
Purchase Commitment One
Future commitments
Remaining Commitment	5,223
Contract Value	7,200
Purchase Commitment Two
Future commitments
Remaining Commitment	6,443
Contract Value	45,600
Purchase Commitment Three
Future commitments
Remaining Commitment	25,336
Contract Value	27,350
Purchase Commitment Four
Future commitments
Remaining Commitment	41,210
Contract Value	41,210
Purchase Commitment Five
Future commitments
Remaining Commitment	8,906
Contract Value	8,906
Purchase Commitment Six
Future commitments
Remaining Commitment	10,580
Contract Value	28,800
Purchase Commitment Seven
Future commitments
Remaining Commitment	16,644
Contract Value	16,644
Purchase Commitment Eight
Future commitments
Remaining Commitment	21,878
Contract Value	21,878
Purchase Commitment Nine
Future commitments
Remaining Commitment	14,374
Contract Value	22,200
Other Purchase Commitment
Future commitments
Long-term purchase commitment	$ 102,317