The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended		12 Months Ended
	Nov. 30, 2015	Feb. 29, 2016	Feb. 28, 2015	May. 31, 2015
Goodwill and Other Intangibles (Details) [Line Items]
Amortization expense		$ 1.7	$ 1.4	$ 1.9
Useful life (in years)		4 years
Finite-Lived Intangible Assets
Goodwill and Other Intangibles (Details) [Line Items]
Amortization expense		$ 1.7	$ 1.4
Troubadour, Limited \| Finite-Lived Intangible Assets
Goodwill and Other Intangibles (Details) [Line Items]
Amortization expense	$ 0.0