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Note 17 - Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30 , |  |  | June 30 , |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Computation of Basic and Diluted Earnings Per Share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to the Company's common shareholders |  | $ | 150,852 |  |  | $ | 131,861 |  |  | $ | 280,353 |  |  | $ | 197,039 |
Earnings attributable to participating securities |  |  | (863 | ) |  |  | (647 | ) |  |  | (1,472 | ) |  |  | (1,070 | )
Net income available to the Company’s common shareholders for basic earnings per share |  |  | 149,989 |  |  |  | 131,214 |  |  |  | 278,881 |  |  |  | 195,969 |
Distributions on convertible units |  |  | 282 |  |  |  | 259 |  |  |  | 521 |  |  |  | 29 |
Net income available to the Company’s common shareholders for diluted earnings per share |  | $ | 150,271 |  |  | $ | 131,473 |  |  | $ | 279,402 |  |  | $ | 195,998 |
Weighted average common shares outstanding – basic |  |  | 420,731 |  |  |  | 423,650 |  |  |  | 422,060 |  |  |  | 423,516 |
Effect of dilutive securities (1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity awards |  |  | 350 |  |  |  | 432 |  |  |  | 352 |  |  |  | 505 |
Assumed conversion of convertible units |  |  | 847 |  |  |  | 862 |  |  |  | 824 |  |  |  | 63 |
Weighted average common shares outstanding – diluted |  |  | 421,928 |  |  |  | 424,944 |  |  |  | 423,236 |  |  |  | 424,084 |
Net income available to the Company's common shareholders: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 0.36 |  |  | $ | 0.31 |  |  | $ | 0.66 |  |  | $ | 0.46 |
Diluted earnings per share |  | $ | 0.36 |  |  | $ | 0.31 |  |  | $ | 0.66 |  |  | $ | 0.46 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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