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Note 14 - Selected Financial Information of Registrant (Tables) | 3 Months Ended
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Mar. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract] |
Selected Financial Information Of Registrant [Table Text Block] |
(In thousands) | March 31, 2015 |  | December 31, 2014
Investment in subsidiaries, at equity in net assets | $ | 2,960,604 |  |  | $ | 2,746,915 |
Total assets | 3,870,760 |  |  | 3,759,275 |
Long-term debt | 1,218,972 |  |  | 1,209,926 |
Total liabilities | 1,594,866 |  |  | 1,587,525 |
Equity component of currently redeemable convertible senior notes | 68,982 |  |  | 74,690 |
Total stockholders’ equity | 2,206,912 |  |  | 2,097,060 |
Total liabilities and stockholders’ equity | 3,870,760 |  |  | 3,759,275 |

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- Definition Tabular disclosure of condensed financial statements, including, but not limited to, the balance sheet, income statement, and statement of cash flows. + References No definition available. + Details
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