Financial Assets and Liabilities Measured on a Recurring Basis (Detail) - Recurring Basis - USD ($) $ in Thousands	May 31, 2016	Feb. 29, 2016
Current trading investments
Total value of investments	$ 545	$ 542
Total value of investments	545	542
Current Liabilities:
Margin balance	(356)	(397)
Total value of liabilities	(356)	(397)
Total	189	145
Marketable Equity Securities
Current trading investments
Current trading investments	545	542
Level 1 Assets and Liabilities
Current trading investments
Total value of investments	545	542
Total value of investments	545	542
Current Liabilities:
Margin balance	(356)	(397)
Total value of liabilities	(356)	(397)
Total	189	145
Level 1 Assets and Liabilities \| Marketable Equity Securities
Current trading investments
Current trading investments	$ 545	$ 542

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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Fair value of asset after deduction of liability.

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(12))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Trading Securities
-URI http://asc.fasb.org/extlink&oid=6526789

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 35
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-URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560

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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Available-for-Sale Securities
-URI http://asc.fasb.org/extlink&oid=6505594

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Fair value portion of liability related to investment contracts for example, but not limited to, guaranteed investment contract or annuities.

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-Name Accounting Standards Codification
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