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Selected Financial Quarterly Data (Unaudited) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Selected Financial Quarterly Data (Unaudited) | Selected Financial Quarterly Data (Unaudited) The following is a summary of the quarterly results of operations for the years ended December 31, 2017 and 2016 (in thousands, except per share data):
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Full Year |
2017 |  |  |  |  |  |  |  |  |  |
Total revenue | $ | 97,296 |  |  | $ | 116,092 |  |  | $ | 108,119 |  |  | $ | 92,556 |  |  | $ | 414,063 |  |
Total operating expenses | 90,046 |  |  | 103,685 |  |  | 98,533 |  |  | 82,957 |  |  | 375,221 |  |
Operating income (loss) | 7,250 |  |  | 12,407 |  |  | 9,586 |  |  | 9,599 |  |  | 38,842 |  |
Net income (loss) | (289 | ) |  | 386 |  |  | (217 | ) |  | 28,444 |  |  | 28,324 |  |
Net income (loss) attributable to the Company | (13 | ) |  | (885 | ) |  | (1,000 | ) |  | 24,920 |  |  | 23,022 |  |
Net income (loss) attributable to common stockholders | (1,686 | ) |  | (2,592 | ) |  | (2,707 | ) |  | 23,212 |  |  | 16,227 |  |
Diluted income (loss) attributable to common stockholders per share | $ | (0.07 | ) |  | $ | (0.09 | ) |  | $ | (0.09 | ) |  | $ | 0.65 |  |  | $ | 0.51 |  | (1 | )
Weighted average diluted common shares | 27,267 |  |  | 31,469 |  |  | 31,483 |  |  | 38,178 |  |  | 34,706 |  |
2016 |  |  |  |  |  |  |  |  |  |
Total revenue | $ | 99,797 |  |  | $ | 112,432 |  |  | $ | 99,651 |  |  | $ | 93,977 |  |  | $ | 405,857 |  |
Total operating expenses | 88,344 |  |  | 101,917 |  |  | 88,404 |  |  | 80,051 |  |  | 358,716 |  |
Operating income (loss) | 11,453 |  |  | 10,515 |  |  | 11,247 |  |  | 13,926 |  |  | 47,141 |  |
Net income (loss) | (139 | ) |  | 2,292 |  |  | 21,322 |  |  | 845 |  |  | 24,320 |  |
Net income (loss) attributable to the Company | (134 | ) |  | 2,188 |  |  | 16,858 |  |  | 404 |  |  | 19,316 |  |
Net income (loss) attributable to common stockholders | (1,028 | ) |  | 1,210 |  |  | 15,864 |  |  | (590 | ) |  | 15,456 |  |
Diluted income (loss) attributable to common stockholders per share | $ | (0.04 | ) |  | $ | 0.04 |  |  | $ | 0.55 |  |  | $ | (0.03 | ) |  | $ | 0.55 |  | (1 | )
Weighted average diluted common shares | 28,343 |  |  | 32,418 |  |  | 33,874 |  |  | 25,532 |  |  | 31,195 |  |
_________________ (1) The sum of the diluted income (loss) from continuing operations attributable to common stockholders per share for the four quarters in 2017 and 2016 differs from the annual diluted income (loss) from continuing operations attributable to common stockholders per share due to the required method of computing the weighted average diluted common shares in the respective periods.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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