Earnings per Share - Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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| Numerator: | |||||||||||||||||||
| Net income | $ 134,633 | $ 166,550 | $ 102,849 | $ 105,692 | $ 143,122 | $ 136,170 | $ 119,961 | $ 93,988 | $ 509,724 | $ 493,241 | $ 377,215 | ||||||||
| Allocation of undistributed income to Series B Preferred Stock | 0 | 0 | (3,825) | ||||||||||||||||
| Net income available to common stockholders for basic net income per common share | 509,724 | 493,241 | 373,390 | ||||||||||||||||
| Add back: | |||||||||||||||||||
| Allocation of undistributed income to Series B Preferred Stock | 0 | 0 | 3,825 | ||||||||||||||||
| Net income available to common stockholders for diluted net income per common share | $ 509,724 | $ 493,241 | $ 377,215 | ||||||||||||||||
| Denominator: | |||||||||||||||||||
| Weighted average common shares outstanding for basic net income per common share | [1] | 5,375,707 | 5,788,944 | 6,227,646 | |||||||||||||||
| Weighted average impact of assumed Series B Preferred Stock conversion (in shares) | 0 | 0 | 63,789 | ||||||||||||||||
| Weighted average impact of dilutive equity instruments | 59,459 | 73,076 | 93,356 | ||||||||||||||||
| Weighted average shares for diluted net income per common share | 5,435,166 | 5,862,020 | 6,384,791 | ||||||||||||||||
| Net income per common share: | |||||||||||||||||||
| Basic (in dollars per share) | $ 0.03 | $ 0.03 | $ 0.02 | $ 0.02 | $ 0.03 | $ 0.02 | $ 0.02 | $ 0.02 | $ 0.09 | $ 0.09 | $ 0.06 | ||||||||
| Diluted (in dollars per share) | $ 0.03 | $ 0.03 | $ 0.02 | $ 0.02 | $ 0.03 | [2] | $ 0.02 | [2] | $ 0.02 | [2] | $ 0.02 | [2] | $ 0.09 | $ 0.08 | $ 0.06 | ||||
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- Definition Incremental common shares attributable to dilutive equity instruments. 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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- References 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 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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- References No definition available.
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible preferred stock using the if-converted 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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- References No definition available.
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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 Amount of undistributed earnings (loss) allocated to participating securities for the diluted 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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