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Note 4 - Marketable Securities | 3 Months Ended
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Mar. 31, 2014
Disclosure Text Block Supplement [Abstract] |
Cash, Cash Equivalents, and Marketable Securities [Text Block] | 4) Marketable securities At March 31, 2014 and December 31, 2013, FutureFuel had investments in certain preferred stock, trust preferred securities, exchange traded debt instruments, and other equity instruments. These investments are classified as current assets in the consolidated balance sheet. FutureFuel has designated these securities as being available-for-sale. Accordingly, they are recorded at fair value, with the unrealized gains and losses, net of taxes, reported as a component of stockholders’ equity. These securities were comprised of the following at:
|  | March 31, 2014
|  | Adjusted Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value
Equity instruments |  | $ | 58,635 |  |  | $ | 11,073 |  |  | $ | (2,745 | ) |  | $ | 66,963 |  |
Preferred stock |  |  | 18,756 |  |  |  | 1,613 |  |  |  | (25 | ) |  |  | 20,344 |  |
Trust preferred securities |  |  | 20,240 |  |  |  | 803 |  |  |  | (12 | ) |  |  | 21,031 |  |
Exchange traded debt instruments |  |  | 1,809 |  |  |  | 123 |  |  |  | - |  |  |  | 1,932 |  |
Total |  | $ | 99,440 |  |  | $ | 13,612 |  |  | $ | (2,782 | ) |  | $ | 110,270 |  |
|  | December 31, 2013 |
|  | Adjusted Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
Equity instruments |  | $ | 51,711 |  |  | $ | 11,597 |  |  | $ | (278 | ) |  | $ | 63,030 |
Preferred stock |  |  | 18,519 |  |  |  | 893 |  |  |  | (299 | ) |  |  | 19,113 |
Trust preferred securities |  |  | 19,726 |  |  |  | 386 |  |  |  | (235 | ) |  |  | 19,877 |
Exchange traded debt instruments |  |  | 2,243 |  |  |  | 34 |  |  |  | (26 | ) |  |  | 2,251 |
Total |  | $ | 92,199 |  |  | $ | 12,910 |  |  | $ | (838 | ) |  | $ | 104,271 |
The aggregate fair value of instruments with unrealized losses totaled $18,345 and $26,321 at March 31, 2014 and December 31, 2013, respectively. As of March 31, 2014 and December 31, 2013, FutureFuel had a total of $0 and $0 invested in marketable securities that were in an unrealized loss position for a greater than 12-month period, respectively.

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