Goodwill and Other Intangible Assets - Additional Information (Detail) £ in Thousands, $ in Thousands		12 Months Ended
	Dec. 18, 2014 USD ($)	Feb. 29, 2016 USD ($)	Feb. 28, 2015 USD ($)	Feb. 28, 2015 GBP (£)	Feb. 28, 2014 USD ($)	Feb. 28, 2014 GBP (£)
Goodwill And Other Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization		$ 31,526	$ 30,048
Property and exploration rights		2,800	37,700
Adjustment related to income taxes		4,346	4,346
Amortization expense for intangible assets		5,431	3,797		$ 4,532
Estimated annual amortization expense for 2017		4,022
Estimated annual amortization expense for 2018		2,899
Estimated annual amortization expense for 2019		2,794
Estimated annual amortization expense for 2020		2,669
Estimated annual amortization expense for 2021		553
Character Property Rights [Member]
Goodwill And Other Intangible Assets [Line Items]
Property and exploration rights	$ 37,700	$ 10,000	37,700
Weighted average useful life of patents and patent rights		5 years
Property rights with an indefinite useful life			11,310
Clinton Cards [Member]
Goodwill And Other Intangible Assets [Line Items]
Impairment of intangible assets			21,924	£ 13,500
Impaired trade names			$ 0
Goodwill impairment charges					733	£ 465
Impaired goodwill					$ 0