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Note 14 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Balances | [1] | $ 79,776 |  |
Exercise of Stock options (in shares) |  | 29,043 | 12,563 |
Exercise of Stock options |  | $ 71 |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  | (340) |  |
Stock-based compensation |  | 525 |  |
Net income |  | 2,799 | $ 3,744 | [2],[3]
Other comprehensive income (loss) |  | 610 | $ 17 |
Balances |  | $ 83,441 |  |
Common Stock [Member] |  |  |  |
Balances (in shares) |  | 10,627,988,000 |  |
Balances |  | $ 15,823 |  |
Exercise of Stock options (in shares) |  | 29,043,000 |  |
Exercise of Stock options |  | $ 365 |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares) |  | (13,281,000) |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Stock-based compensation |  |  |  |
Other comprehensive income (loss) |  |  |  |
Balances (in shares) |  | 10,643,750,000 |  |
Balances |  | $ 16,188 |  |
Additional Paid-in Capital [Member] |  |  |  |
Balances |  | 3,953 |  |
Exercise of Stock options |  | (294) |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  | (340) |  |
Stock-based compensation |  | 525 |  |
Other comprehensive income (loss) |  |  |  |
Balances |  | 3,844 |  |
Retained Earnings [Member] |  |  |  |
Balances |  | 60,810 |  |
Exercise of Stock options |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Stock-based compensation |  |  |  |
Net income |  | 2,799 |  |
Other comprehensive income (loss) |  |  |  |
Balances |  | 63,609 |  |
AOCI Attributable to Parent [Member] |  |  |  |
Balances |  | (810) |  |
Exercise of Stock options |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Stock-based compensation |  |  |  |
Other comprehensive income (loss) |  | 610 |  |
Balances |  | $ (200) |  |
[1] | The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.
[2] | The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.
[3] | The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.

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