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=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 2
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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	9 Months Ended		12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Feb. 29, 2016
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of asset	8 years 8 months 12 days		8 years 8 months 12 days
Amortization of trade names, customer lists, and patent	$ 3,494,000	$ 3,406,000
Purchase price allocation adjustment added to goodwill			$ 48,000
Sovereign [Member]
Finite-Lived Intangible Assets [Line Items]
Purchase price allocation adjustment added to goodwill		$ 48,000
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of asset	1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of asset	15 years