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Earnings Per Share | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share [Abstract] |
Earnings Per Share | 17. Earnings Per Share The computation of basic and diluted earnings per share is as follows:
|  | Years Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
($ in thousands, except per share amounts) |  |  |  |  |  |  |  |  |
Net Income |  | $ | 96,965 |  |  | $ | 77,130 |  |  | $ | 37,773 |
Noncontrolling interests |  |  | 735 |  |  |  | (1,940 | ) |  |  | (101 | )
Allocation of earnings to preferred stockholders |  |  | — |  |  |  | — |  |  |  | (64 | )
Net Income Attributable to Common Stockholders |  | $ | 97,700 |  |  | $ | 75,190 |  |  | $ | 37,608 |
Shares: |  |  |  |  |  |  |  |  |  |  |  |
Basic: Weighted-average number of shares outstanding |  |  | 9,091 |  |  |  | 8,188 |  |  |  | 7,727 |
Plus: Incremental shares from assumed conversion of dilutive instruments |  |  | 201 |  |  |  | 245 |  |  |  | 346 |
Diluted: Weighted-average number of shares outstanding |  |  | 9,292 |  |  |  | 8,433 |  |  |  | 8,073 |
Earnings per share—basic |  | $ | 10.75 |  |  | $ | 9.18 |  |  | $ | 4.87 |
Earnings per share—diluted |  | $ | 10.51 |  |  | $ | 8.92 |  |  | $ | 4.66 |
For the year ended December 31, 2014, there were 6,085 instruments excluded from the above computations of weighted-average shares for diluted EPS because the effect would be anti-dilutive. For the years ended December 31, 2013 and 2012, there were no instruments excluded from the above computations of weighted-average shares for diluted EPS because the effect would be anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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