Commitments and Contingencies (Details)	3 Months Ended
	Apr. 30, 2016
Property leases | Maximum
Leases
Lease expiration date	Sep. 30, 2031
Retail store leases | Minimum
Leases
Percentage of annual sales volume used for incremental rent on certain retail location leases	2.00%
Retail store leases | Maximum
Leases
Percentage of annual sales volume used for incremental rent on certain retail location leases	12.00%
Retail concession leases | Average
Leases
Percentage of annual sales volume used for incremental rent on certain retail location leases	34.00%
Equipment operating leases | Maximum
Leases
Lease expiration date	Mar. 31, 2021