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Earning Per Common share (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Weighted average common shares outstanding | 5,996,437 | 5,759,524 | 5,519,151 | ||||||||
| Net income available to common stockholders | $ 8,457 | $ 9,202 | $ 8,231 | $ 8,155 | $ 6,487 | $ 6,035 | $ 5,845 | $ 4,871 | $ 34,045 | $ 23,238 | $ 17,378 |
| Net income per common share, basic | $ 1.40 | $ 1.53 | $ 1.38 | $ 1.37 | $ 1.10 | $ 1.03 | $ 1.02 | $ 0.88 | $ 5.68 | $ 4.03 | $ 3.15 |
| Weighted average common shares outstanding | 5,996,437 | 5,759,524 | 5,519,151 | ||||||||
| Dilutive effects of assumed conversions and exercise of stock options and warrants | 945,315 | 989,639 | 775,453 | ||||||||
| Weighted average common and dilutive potential common shares outstanding | 6,941,752 | 6,749,163 | 6,294,604 | ||||||||
| Net income available to common stockholders | 8,457 | 9,202 | 8,231 | 8,155 | 6,487 | 6,035 | 5,845 | 4,871 | 34,045 | 23,238 | 17,378 |
| Effect of interest expense on convertible debt, net of tax and discretionary expenditures related to conversion | 569 | 568 | 473 | ||||||||
| Net income available to common stockholders, adjusted for effect of debt conversion | $ 34,614 | $ 23,806 | $ 17,851 | ||||||||
| Diluted earnings per common share | $ 4.99 | $ 3.53 | $ 2.84 | ||||||||
| X | ||||||||||
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- Definition
Includes 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
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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| X | ||||||||||
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- Definition
The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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. No definition available.
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes 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
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
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
Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
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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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