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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
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Feb. 28, 2017 | Feb. 29, 2016 | Feb. 28, 2015
Income Tax [Line Items] |  |  |
Effective tax rate on earnings from operations | 34.00% | 36.80% | 36.70%
Tax benefit recognized | 50.00% |  |
Unrecognized tax benefits, including accrued interest and penalties | $ 249,000 | $ 225,000 |
Unrecognized tax benefit includes an aggregate of interest expense | $ 8,000 |  |
Unrecognized tax benefits expiring | 12 months |  |
Unrecognized interest or penalties other than tax benefits | $ 0 | 0 | $ 0
Foreign Tax Authority [Member] |  |  |
Income Tax [Line Items] |  |  |
Foreign tax credit valuation allowance |  | 1,400,000 |
ASU 2015-17 [Member] |  |  |
Income Tax [Line Items] |  |  |
Reclassification to deferred tax liabilities |  | $ 6,300,000 |
Internal Revenue Service (IRS) [Member] |  |  |
Income Tax [Line Items] |  |  |
Operating Loss Carryforwards | $ 84,000 |  |
Internal Revenue Service (IRS) [Member] | Minimum [Member] |  |  |
Income Tax [Line Items] |  |  |
Net operating loss carry forwards expiring | 2024 |  |
Internal Revenue Service (IRS) [Member] | Maximum [Member] |  |  |
Income Tax [Line Items] |  |  |
Net operating loss carry forwards expiring | 2025 |  |

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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=75116654&loc=d3e31917-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 + Details
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