Concentrations of Risk and Major Customers - Additional Information (Detail) - Customer Concentration Risk - Customer	12 Months Ended
Feb. 29, 2016	Feb. 28, 2015
Concentration Risk [Line Items]
Number of customer	2	1
Sales Revenue, Goods, Net \| Lockheed Martin
Concentration Risk [Line Items]
Concentration risk, percentage of consolidated net sales	35.00%	27.00%
Sales Revenue, Goods, Net \| Flight Safety
Concentration Risk [Line Items]
Concentration risk, percentage of consolidated net sales	10.10%
Sales Revenue, Goods, Net \| UNITED STATES
Concentration Risk [Line Items]
Concentration risk, percentage of consolidated net sales	49.00%	41.00%
Sales Revenue, Goods, Net \| Non-US
Concentration Risk [Line Items]
Concentration risk, percentage of consolidated net sales	19.00%	15.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration