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Long-Term Debt - Additional Information (Detail) (USD $) |  |  |  | 6 Months Ended |  | 6 Months Ended |
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Aug. 31, 2013 Revolving Credit Facility [Member] | Feb. 28, 2013 Revolving Credit Facility [Member] | Aug. 31, 2013 Standby letters of credit [Member] | Aug. 31, 2013 Second Amendment [Member] Revolving Credit Facility [Member] | Aug. 31, 2012 Second Amendment [Member] Revolving Credit Facility [Member] | Aug. 31, 2013 Second Amendment [Member] Revolving Credit Facility [Member] Minimum [Member] | Aug. 31, 2013 Second Amendment [Member] Revolving Credit Facility [Member] Maximum [Member] | Sep. 19, 2013 Third Amendment [Member] Revolving Credit Facility [Member]
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Revolving credit facility, initiation date |  |  |  | Feb. 22, 2012 |  |  |  |
Revolving credit facility, maximum borrowing capacity |  |  |  | $ 150,000,000 |  |  |  |
Revolving credit facility, additional borrowing capacity |  |  |  | 200,000,000 |  |  |  |
Revolving credit facility, maturity date |  |  |  | Aug. 16, 2016 |  |  |  |
Revolving credit facility, interest rate description |  |  |  | London Interbank Offered Rate ("LIBOR") plus a spread ranging from 1.0% to 2.25% |  |  |  |
Revolving credit facility, variable basis spread |  |  |  |  |  | 1.00% | 2.25% |
Revolving credit facility, interest rate variable basis spread, option one |  |  |  | 1.25% | 1.98% |  |  |
Revolving credit facility, interest rate variable basis spread, option two |  |  |  | 1.43% |  |  |  |
Revolving credit facility, outstanding borrowings | 35,000,000 | 57,500,000 | 3,000,000 |  |  |  |  |
Revolving credit facility, remaining borrowing capacity |  |  | 112,000,000 |  |  |  |  |
Revolving credit facility, percentage of capital securities of direct Foreign Subsidiary | 65.00% |  |  |  |  |  |  |
Minimum tangible net worth, amount |  |  |  |  |  |  |  | $ 100,000,000
Minimum tangible net worth percentage |  |  |  |  |  |  |  | 25.00%

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- Definition Minimum Tangible Net Worth As Entered Into Amended Credit Agreement + References No definition available. + Details
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- Definition Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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