| Redeemable Noncontrolling Interests Adjustments |
| Adjustments as of June 6, 2012 | Redeemable noncontrolling interests | | ) | Additional Paid in Capital | | | Retained earnings | | | Noncontrolling interests | | |
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| Earnings per Share Basic and Diluted |
| | | Three months ended | | | | March 31, | | | | 2013 | | | 2012 | Basic earnings per share: | | | | | | Net income attributable to common stockholders | $ | 6,557 | | $ | 11,084 | Add (deduct) net income attributable to non-fair value redemption rights | | - | | | 1,239 | Net income available for common stockholders | $ | 6,557 | | $ | 12,323 | | | | | | | | Weighted average shares of common stock outstanding: | | | | Class A | | 47,499,798 | | | 45,576,825 | Class B | | 100 | | | 100 | | | | 47,499,898 | | | 45,576,925 | | | | | | | | Basic earnings per share | $ | 0.14 | | $ | 0.27 |
| | | Three months ended | | | | March 31, | | | | 2013 | | | 2012 | Diluted earnings per share: | | | | | | Net income available for common stockholders | $ | 6,557 | | $ | 12,323 | | | | | | | | Weighted average shares of common stock outstanding: | | | | Class A: | | | | | | Issued and outstanding | | 47,499,798 | | | 45,576,825 | Potentially dilutive common shares: | | | | | | Issuable pursuant to 2007 ROI Unit Stock Plan | | 188,416 | | | 374,539 | Class B | | 100 | | | 100 | | | | 47,688,314 | | | 45,951,464 | | | | | | | | Diluted earnings per share | $ | 0.14 | | $ | 0.27 |
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