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Note 11 - Marketable Securities (Details) - Marketable Securities (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Note 11 - Marketable Securities (Details) - Marketable Securities [Line Items] |  |
Equity securities | $ 25,995 | $ 19,223
Equity securities | 59,723 | 33,428
Other debt securities | 59 | 284
Other debt securities | 3,102 | 3,397
Total marketable securities | 62,766 | 36,541
Total marketable securities | 26,054 | 19,507
Total marketable securities | 62,825 | 36,825
Amortized Cost [Member] |  |
Note 11 - Marketable Securities (Details) - Marketable Securities [Line Items] |  |
Equity securities | 33,728 | 14,205
Other debt securities | 3,043 | 3,113
Total marketable securities | $ 36,771 | $ 17,318

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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