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Shareholders' Equity - Additional Information (Detail) (USD $)
Share data in Millions, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2014
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| Stockholders Equity [Line Items] | |
| Common stock reserved | 8.7us-gaap_CommonStockCapitalSharesReservedForFutureIssuance |
| Effective income tax rate | 35.00%atro_OtherComprehensiveIncomeLossEffectiveIncomeTaxRate |
| Income tax effect recorded for currency translation adjustments | $ 0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax |
| Convertible Class B Stock [Member] | |
| Stockholders Equity [Line Items] | |
| Class B stock voting rights per share | 10 votes per share |
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- Definition
Other comprehensive income loss effective income tax rate. No definition available.
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- Details
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- Definition
Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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