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Note 17 - Special Cash Dividends (Details Textual) - USD ($) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
May. 31, 2013 | Jun. 21, 2013 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Special Cash Dividend 2013 [Member] |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | $ 0
Common Stock, Dividends, Per Share, Declared |  | $ 5 |  |  |
Dividends, Common Stock, Cash |  | $ 340,772,000 |  |  |
Special Cash Dividends Declared but Unpaid |  |  | $ 76,000 |  |
Retained Earnings Dividend Declaration Date |  | $ 4,934,000 |  |  |
Allocated Share-based Compensation Expense |  |  | $ 8,241,000 | $ 12,612,000 | $ 12,368,000
Common Stock, Dividends, Per Share, Declared | $ 5 |  |  |  | $ 5

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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit as of the dividend declaration date. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of special cash dividends declared but unpaid on equity securities issued by the entity and outstanding. + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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