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Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2012
Quarterly Financial Data | The following table summarizes our quarterly financial data which, in the opinion of management, reflects all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of our results of operations:
|  | For the Three-Month Periods Ended |
|  | March 31 |  |  | June 30 |  |  | September 30 |  |  | December 31 |
2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | 3,990 |  |  | $ | 4,086 |  |  | $ | 4,041 |  |  | $ | 4,512 |
Net income (loss) |  |  | 153 |  |  |  | 239 |  |  |  | (14 | ) |  |  | 49 |
Net income (loss) allocable to common shares |  |  | (26 | ) |  |  | (14 | ) |  |  | (28 | ) |  |  | (55 | )
Total earnings (loss) per share—Basic(a) |  | $ | (0.21 | ) |  | $ | (0.04 | ) |  | $ | (0.09 | ) |  | $ | (0.19 | )
Total earnings (loss) per share—Diluted(a) |  | $ | (0.21 | ) |  | $ | (0.04 | ) |  | $ | (0.09 | ) |  | $ | (0.19 | )
2011: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | — |  |  | $ | 2,174 |  |  | $ | 3,222 |  |  | $ | 3,272 |
Net income (loss) |  |  | (63 | ) |  |  | (189 | ) |  |  | (65 | ) |  |  | (53 | )
Net income (loss) allocable to common shares |  |  | (63 | ) |  |  | 27 |  |  |  | (48 | ) |  |  | (28 | )
Total earnings (loss) per share—Basic(a) |  | $ | (3.16 | ) |  | $ | 1.35 |  |  | $ | (2.40 | ) |  | $ | (1.40 | )
Total earnings (loss) per share—Diluted(a) |  | $ | (3.16 | ) |  | $ | 1.35 |  |  | $ | (2.40 | ) |  | $ | (1.40 | )
(a) | The summation of quarterly per share amounts do not equal the full year amounts.

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and 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=20225539&loc=d3e1280-108306 + Details
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