Net income per share was determined by dividing adjusted net income to shareholders by the applicable weighted average shares outstanding.
| | | | | | | | | | | | | | | | | | Quarter Ended September 30, | | Nine Months Ended September 30, | (in thousands, except per share amounts) | 2012 | | 2011 | | 2012 | | 2011 | Net income to shareholders | $ | 49,653 |
| | $ | 53,264 |
| | $ | 196,593 |
| | $ | 91,850 |
| Less: Adjustment of redeemable noncontrolling interests | (1,702 | ) | | — |
| | 6,484 |
| | — |
| Adjusted net income to shareholders | $ | 51,355 |
| | $ | 53,264 |
| | $ | 190,109 |
| | $ | 91,850 |
| | | | | | | | | Basic common shares outstanding | 9,632 |
| | 9,680 |
| | 9,641 |
| | 9,706 |
| Dilutive potential common shares | 27 |
| | 38 |
| | 26 |
| | 40 |
| Diluted shares outstanding | 9,659 |
| | 9,718 |
| | 9,667 |
| | 9,746 |
| Basic net income per share | $ | 5.33 |
| | $ | 5.50 |
| | $ | 19.72 |
| | $ | 9.46 |
| Diluted net income per share | $ | 5.32 |
| | $ | 5.48 |
| | $ | 19.67 |
| | $ | 9.42 |
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