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Summary of Quarterly Results (Tables) | 12 Months Ended
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Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] | The following is a summary of quarterly financial information as of and for the years ended December 31, 2014 and 2013 (in thousands, except per share data):
| 1st Quarter |  | 2nd Quarter |  | 3rd Quarter |  | 4th Quarter
2014 |  |  |  |  |  |  |
Total revenue | $ | 152,114 |  |  | $ | 150,500 |  |  | $ | 146,558 |  |  | $ | 147,810 |
Net income (loss) | (2,245 | ) |  | 2,174 |  |  | 8,882 |  |  | (1,869 | )
Net income (loss) allocated to Common Shares | (4,041 | ) |  | 385 |  |  | 6,967 |  |  | (3,585 | )
Basic earnings (loss) per Common Share | $ | (0.03 | ) |  | $ | — |  |  | $ | 0.04 |  |  | $ | (0.02 | )
Diluted earnings (loss) per Common Share | $ | (0.03 | ) |  | $ | — |  |  | $ | 0.04 |  |  | $ | (0.02 | )
2013 |  |  |  |  |  |  |
Total revenue | $ | 139,554 |  |  | $ | 140,664 |  |  | $ | 143,354 |  |  | $ | 138,658 |
Net income | 3,919 |  |  | 7,180 |  |  | 11,088 |  |  | 21,002 |
Net income allocated to Common Shares | 2,058 |  |  | 5,308 |  |  | 9,173 |  |  | 18,975 |
Basic earnings per Common Share | $ | 0.01 |  |  | $ | 0.03 |  |  | $ | 0.06 |  |  | $ | 0.12 |
Diluted earnings per Common Share | $ | 0.01 |  |  | $ | 0.03 |  |  | $ | 0.06 |  |  | $ | 0.12 |

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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=35737889&loc=d3e1280-108306 + Details
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