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Note 8 - Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2020
Notes Tables |
Schedule of Dividends Payable [Table Text Block] |
Declaration Date |  | Per Share |  |  | Amount |  | Record Date |  | Payment Date
February 10, 2020 |  | $ | 0.20 |  |  | $ | 2,285 |  | February 25, 2020 |  | March 6, 2020
May 4, 2020 |  |  | 0.20 |  |  |  | 2,285 |  | May 19, 2020 |  | May 29, 2020
|  | $ | 0.40 |  |  | $ | 4,570 |  |  |  |
Nonvested Restricted Stock Shares Activity [Table Text Block] |
|  | Shares |  |  | Wtd. Avg. Price at Date of Issuance |
Nonvested at December 31, 2019 |  |  | 957,682 |  |  | $ | 7.34 |
Vested |  |  | (195,722 | ) |  | $ | 7.53 |
Nonvested at June 30, 2020 |  |  | 761,960 |  |  | $ | 7.29 |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Foreign Currency Translation Adjustment |  |  | Unrealized Gains (Losses) on Available-For-Sale Investments |  |  | Total |
Balance, December 31, 2019 |  | $ | (1,245 | ) |  | $ | (19 | ) |  | $ | (1,264 | )
Other comprehensive income (loss) |  |  | (138 | ) |  |  | 18 |  |  |  | (120 | )
Balance, June 30, 2020 |  | $ | (1,383 | ) |  | $ | (1 | ) |  | $ | (1,384 | )

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