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Quarterly Financial Information (Tables) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | The following summary represents the unaudited quarterly results of operations for the years ended December 31, 2016 and 2015 (dollars in thousands, except per share data):
| For the three months ended (1)
| 3/31/16 |  | 6/30/16 |  | 9/30/16 |  | 12/31/16
Total revenue | $ | 508,498 |  |  | $ | 502,307 |  |  | $ | 516,211 |  |  | $ | 518,240 |
Net income | $ | 237,877 |  |  | $ | 197,319 |  |  | $ | 356,329 |  |  | $ | 242,183 |
Net income attributable to common stockholders | $ | 237,931 |  |  | $ | 197,444 |  |  | $ | 356,392 |  |  | $ | 242,235 |
Net income per common share - basic | $ | 1.73 |  |  | $ | 1.44 |  |  | $ | 2.60 |  |  | $ | 1.76 |
Net income per common share - diluted | $ | 1.73 |  |  | $ | 1.44 |  |  | $ | 2.59 |  |  | $ | 1.76 |
| For the three months ended (1)
| 3/31/15 |  | 6/30/15 |  | 9/30/15 |  | 12/31/15
Total revenue | $ | 442,367 |  |  | $ | 457,459 |  |  | $ | 475,360 |  |  | $ | 480,840 |
Net income | $ | 208,053 |  |  | $ | 172,253 |  |  | $ | 206,076 |  |  | $ | 155,352 |
Net income attributable to common stockholders | $ | 208,144 |  |  | $ | 172,324 |  |  | $ | 206,142 |  |  | $ | 155,428 |
Net income per common share - basic | $ | 1.57 |  |  | $ | 1.30 |  |  | $ | 1.54 |  |  | $ | 1.13 |
Net income per common share - diluted | $ | 1.56 |  |  | $ | 1.29 |  |  | $ | 1.53 |  |  | $ | 1.13 |
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(1) | Amounts may not equal full year results due to rounding.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
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