Earnings per Share - Reconciliation of Components Used to Derive Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2014 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Earnings Per Share [Abstract] | ||||||||||||
| Income from continuing operations, net of taxes | $ 14,829 | $ 13,958 | $ 13,983 | $ 11,053 | $ 5,928 | $ 21,800 | $ 11,509 | $ 10,968 | $ 53,823 | $ 50,205 | $ 39,784 | |
| Income (loss) from discontinued operations | $ (444) | 0 | 0 | 0 | 0 | 0 | 0 | (467) | 23 | 0 | (444) | 73 |
| Net income | $ 14,829 | $ 13,958 | $ 13,983 | $ 11,053 | $ 5,928 | $ 21,800 | $ 11,042 | $ 10,991 | 53,823 | $ 49,761 | $ 39,857 | |
| Less: income allocated to unvested restricted shares | 145 | |||||||||||
| Income allocated to common shares | $ 53,678 | |||||||||||
| Weighted-average shares for basic EPS | 31,788,215 | 31,696,100 | 31,598,913 | |||||||||
| Income from continuing operations, net of taxes (in usd per share) | $ 0.46 | $ 0.44 | $ 0.44 | $ 0.35 | $ 0.19 | $ 0.69 | $ 0.36 | $ 0.34 | $ 1.69 | $ 1.58 | $ 1.26 | |
| Loss from discontinued operations, net of taxes (in usd per share) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | (0.01) | 0.00 | 0.00 | (0.01) | 0.00 | |
| Basic earnings per share (in usd per share) | 0.46 | 0.44 | 0.44 | 0.35 | 0.19 | 0.69 | 0.35 | 0.34 | $ 1.69 | $ 1.57 | $ 1.26 | |
| Effect of dilutive securities - options, warrants and unvested restricted stock | 281,964 | 97,607 | ||||||||||
| Effect of dilutive securities (in usd per share) | $ (0.01) | |||||||||||
| Income allocated to common shares | $ 53,678 | |||||||||||
| Weighted-average shares for diluted EPS | 31,876,820 | 31,978,064 | 31,696,520 | |||||||||
| Per Share Amount, Income from continuing operations, net of taxes (in usd per share) | 0.46 | 0.44 | 0.44 | 0.35 | 0.19 | 0.68 | 0.36 | 0.34 | $ 1.68 | $ 1.57 | $ 1.26 | |
| Per Share Amount, (Loss) income from discontinued operations, net of taxes (in usd per share) | $ (0.01) | (0.01) | 0.00 | |||||||||
| Diluted earnings per share (in usd per share) | $ 0.46 | $ 0.44 | $ 0.44 | $ 0.35 | $ 0.19 | $ 0.68 | $ 0.35 | $ 0.34 | $ 1.68 | $ 1.56 | $ 1.26 | |
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- Definition Effect of dilutive securities per share. No definition available.
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- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation. No definition available.
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- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation. No definition available.
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- References 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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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income (loss) from continuing operations 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) derived from continuing operations during 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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- Definition Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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