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Note 17 - Quarterly Results of Operations (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Quarterly Financial Information [Table Text Block] |
|  | (in thousands except per share amounts) |
Quarters ended |  | Mar. 31, 201 7 |  |  | June 30, 201 7 |  |  | Sep. 30, 201 7 |  |  | Dec. 31, 201 7(1) |
Total revenue |  | $ | 158,744 |  |  | $ | 164,326 |  |  | $ | 178,631 |  |  | $ | 203,306 |
Operating income |  |  | 309 |  |  |  | 3,962 |  |  |  | 9,041 |  |  |  | 14,843 |
Net (loss) income |  |  | (39 | ) |  |  | 1,548 |  |  |  | 4,632 |  |  |  | 49,298 |
Basic income per share |  |  | (0.00 | ) |  |  | 0.08 |  |  |  | 0.25 |  |  |  | 2.70 |
Diluted income per share |  |  | (0.00 | ) |  |  | 0.08 |  |  |  | 0.25 |  |  |  | 2.69 |
|  | (in thousands except per share amounts) |
Quarters ended |  | Mar. 31, 2016(2) |  |  | June 30, 2016 |  |  | Sep. 30, 2016 |  |  | Dec. 31, 2016 |
Total revenue |  | $ | 156,341 |  |  | $ | 158,832 |  |  | $ | 164,500 |  |  | $ | 190,978 |
Operating income |  |  | 7,418 |  |  |  | 7,316 |  |  |  | 5,446 |  |  |  | 12,267 |
Net income |  |  | 4,352 |  |  |  | 3,632 |  |  |  | 2,869 |  |  |  | 5,982 |
Basic income per share |  |  | 0.21 |  |  |  | 0.20 |  |  |  | 0.16 |  |  |  | 0.33 |
Diluted income per share |  |  | 0.21 |  |  |  | 0.20 |  |  |  | 0.16 |  |  |  | 0.33 |

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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=84173487&loc=d3e1280-108306 + Details
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