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Note 15 - Selected Financial Information of Registrant (Tables) | 6 Months Ended
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Jun. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract] |
Selected Financial Information Of Registrant [Table Text Block] |
(In thousands) | June 30, 2014 |  | December 31, 2013
Investment in subsidiaries, at equity in net assets | $ | 1,928,280 |  |  | $ | 1,419,360 |
Total assets | 2,935,489 |  |  | 2,112,495 |
Long-term debt | 1,192,397 |  |  | 930,072 |
Total liabilities | 1,351,242 |  |  | 1,172,850 |
Total stockholders’ equity | 1,584,247 |  |  | 939,645 |
Total liabilities and stockholders’ equity | 2,935,489 |  |  | 2,112,495 |

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