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Note 3 - Marketable Equity Securities (Tables) | 12 Months Ended
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Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities [Table Text Block] |
|  | 2013 |  |  | 2012 |
|  | (in thousands) |
Available-for-sale securities |  |  |  |  |  |  |  |
Fair market value |  | $ | 20,810 |  |  | $ | 17,188 |
Cost |  |  | 10,881 |  |  |  | 10,361 |
Unrealized gain |  | $ | 9,929 |  |  | $ | 6,827 |
Trading securities |  |  |  |  |  |  |  |
Fair market value |  | $ | 165 |  |  | $ | 132 |
Cost |  |  | 157 |  |  |  | 158 |
Unrealized gain (loss) |  | $ | 8 |  |  | $ | (26 | )
Total |  |  |  |  |  |  |  |
Fair market value |  | $ | 20,975 |  |  | $ | 17,320 |
Cost |  |  | 11,038 |  |  |  | 10,519 |
Unrealized gain |  | $ | 9,937 |  |  | $ | 6,801 |
Unrealized Gain (Loss) on Investments [Table Text Block] |
|  | 2013 |  |  | 2012 |
|  | (in thousands) |
Available-for-sale securities |  |  |  |  |  |  |  |
Gross unrealized gains |  | $ | 9,946 |  |  | $ | 6,960 |
Gross unrealized losses |  |  | 17 |  |  |  | 133 |
Net unrealized gains |  | $ | 9,929 |  |  | $ | 6,827 |
Realized Gain (Loss) on Investments [Table Text Block] |
|  | 2013 |  |  | 2012 |  |  | 2011 |
|  | (in thousands) |
Trading securities |  |  |  |  |  |  |  |  |  |  |  |
Recognized (loss) gain at beginning of period |  | $ | (26 | ) |  | $ | (16 | ) |  | $ | 14 |
Recognized gain (loss) at end of period |  |  | 8 |  |  |  | (26 | ) |  |  | (16 | )
Change in net recognized gain (loss) |  | $ | 34 |  |  | $ | (10 | ) |  | $ | (30 | )
Schedule of Realized Gain (Loss) [Table Text Block] |
|  | 2013 |  |  | 2012 |  |  | 2011 |
|  | (in thousands) |
Realized gains |  |  |  |  |  |  |  |  |  |  |  |
Sale proceeds |  | $ | 857 |  |  | $ | 4,554 |  |  | $ | 1,137 |
Cost of securities sold |  |  | 290 |  |  |  | 2,183 |  |  |  | 289 |
Realized gains |  | $ | 567 |  |  | $ | 2,371 |  |  | $ | 848 |
Realized gains, net of taxes |  | $ | 346 |  |  | $ | 1,437 |  |  | $ | 526 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | 2013 |  |  | 2012 |
|  | (in thousands) |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
Equity securities – Available for sale |  | $ | 397 |  |  | $ | 17 |  |  | $ | 1,567 |  |  | $ | 133 |
Equity securities – Trading |  |  | - |  |  |  | - |  |  |  | 129 |  |  |  | 26 |
Totals |  | $ | 397 |  |  | $ | 17 |  |  | $ | 1,696 |  |  | $ | 159 |

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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