Subsequent Events - Summary of Historical Earnings Per Share on Pro Forma Basis (Detail) - $ / shares |
3 Months Ended | |
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Mar. 31, 2018 |
Mar. 31, 2017 |
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| Earnings Per Share [Line Items] | ||
| Basic earnings per share | $ 1.13 | $ 1.03 |
| Diluted earnings per share | 1.08 | 0.98 |
| Pro Forma [Member] | ||
| Earnings Per Share [Line Items] | ||
| Basic earnings per share | 0.57 | 0.51 |
| Diluted earnings per share | $ 0.54 | $ 0.49 |
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- Definition Earnings per share. No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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