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Note C - Marketable Equity Securities (Tables) | 3 Months Ended
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Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities [Table Text Block] |
|  | March 31, 2014 |  |  | December 31, 2013 |
|  | (in thousands) |
Available-for-sale securities |  |  |  |  |  |  |  |
Fair market value |  | $ | 21,479 |  |  | $ | 20,810 |
Cost |  |  | 10,869 |  |  |  | 10,881 |
Unrealized gain |  | $ | 10,610 |  |  | $ | 9,929 |
Trading securities |  |  |  |  |  |  |  |
Fair market value |  | $ | 209 |  |  | $ | 165 |
Cost |  |  | 157 |  |  |  | 157 |
Unrealized gain |  | $ | 52 |  |  | $ | 8 |
Total |  |  |  |  |  |  |  |
Fair market value |  | $ | 21,688 |  |  | $ | 20,975 |
Cost |  |  | 11,026 |  |  |  | 11,038 |
Unrealized gain |  | $ | 10,662 |  |  | $ | 9,937 |
Unrealized Gain (Loss) on Investments [Table Text Block] |
|  | March 31, 2014 |  |  | December 31, 2013 |
|  | (in thousands) |
Available-for-sale securities: |  |  |  |  |  |  |  |
Gross unrealized gains |  | $ | 10,624 |  |  | $ | 9,946 |
Gross unrealized losses |  |  | 14 |  |  |  | 17 |
Net unrealized gains |  | $ | 10,610 |  |  | $ | 9,929 |
Realized Gain (Loss) on Investments [Table Text Block] |
|  | Three Months Ended |
|  | March 31, 2014 |  |  | March 31, 2013 |
|  | (in thousands) |
Trading securities |  |  |  |  |  |  |  |
Recognized gain (loss) at beginning of period |  | $ | 8 |  |  | $ | (26 | )
Recognized gain (loss) at end of period |  |  | 52 |  |  |  | (12 | )
Net recognized gain |  | $ | 44 |  |  | $ | 14 |
Net recognized gain, net of taxes |  | $ | 26 |  |  | $ | 9 |
Schedule of Realized Gain (Loss) [Table Text Block] |
|  | Three Months Ended |
|  | March 31, 2014 |  |  | March 31, 2013 |
|  | (in thousands) |
Realized gains |  |  |  |  |  |  |  |
Sale proceeds |  | $ | - |  |  | $ | 13 |
Cost of securities sold |  |  | - |  |  |  | 6 |
Realized gains |  | $ | - |  |  | $ | 7 |
Realized gains, net of taxes |  | $ | - |  |  | $ | 4 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | March 31, 2014 |  |  | December 31, 2013 |
|  | (in thousands) |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
Equity securities – Available-for-sale |  | $ | 88 |  |  | $ | 16 |  |  | $ | 397 |  |  | $ | 17 |
Equity securities – Trading |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Totals |  | $ | 88 |  |  | $ | 16 |  |  | $ | 397 |  |  | $ | 17 |

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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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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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