XML 22 R25.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Earnings Per Common Share (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Schedule of Earnings Per Share Basic and Diluted |
|  | Three Months Ended March 31, |
|  | 2013 |  |  | 2012 |
Numerator—basic and diluted |  |  |  |  |  |  |  |
Net income |  | $ | 23,680 |  |  | $ | 18,431 |
Denominator |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding—basic |  |  | 39,403 |  |  |  | 40,358 |
Effect of dilutive stock options |  |  | 595 |  |  |  | 963 |
Effect of dilutive convertible notes |  |  | — |  |  |  | 1,159 |
Effect of dilutive restricted shares |  |  | 622 |  |  |  | 705 |
Weighted average number of common shares outstanding—diluted |  |  | 40,620 |  |  |  | 43,185 |
Earnings per common share—basic |  | $ | 0.60 |  |  | $ | 0.46 |
Earnings per common share—diluted |  | $ | 0.58 |  |  | $ | 0.43 |
Antidilutive stock options and restricted shares |  |  | 3,486 |  |  |  | 2,081 |

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration