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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Loss | Retained Earnings | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2018 | $ 329,230 | $ 3,276 | $ 83,177 | $ (4,507) | $ 262,840 | $ (15,556)
Balance (in shares) at Dec. 31, 2018 |  | 32,752,827 |  |  |  | 2,902,992
Stocks issued under ESPP | 338 | $ 2 | 336 |  |  |
Stocks issued under ESPP, Shares |  | 22,441 |  |  |  |
Cash dividends on common stock ($0.02 per share) | (580) |  |  |  | (580) |
Foreign currency translation adjustment, net | (1,769) |  |  | (1,769) |  |
Stock based compensation | 1,485 |  | 1,485 |  |  |
Stock options exercised; grants, termination and vesting of restricted stock units (net of shares in lieu of taxes) | (888) | $ 42 | (930) |  |  |
Stock options exercised; grants, termination and vesting of restricted stock units (net of shares in lieu of taxes), Shares |  | 419,295 |  |  |  |
Shares Repurchased | (2,604) |  |  |  |  | $ (2,604)
Shares repurchased (In Shares) |  |  |  |  |  | 158,048
Net income | 3,906 |  |  |  | 3,906 |
Balance at Mar. 31, 2019 | 329,118 | $ 3,320 | 84,068 | (6,276) | 266,166 | $ (18,160)
Balance (in shares) at Mar. 31, 2019 |  | 33,194,563 |  |  |  | 3,061,040
Balance at Dec. 31, 2019 | $ 344,156 | $ 3,324 | 90,572 | (5,698) | 274,118 | $ (18,160)
Balance (in shares) at Dec. 31, 2019 | 33,233,614 | 33,233,614 |  |  |  | 3,061,040
Stocks issued under ESPP | $ 352 | $ 2 | 350 |  |  |
Stocks issued under ESPP, Shares |  | 22,776 |  |  |  |
Cash dividends on common stock ($0.02 per share) | (586) |  |  |  | (586) |
Foreign currency translation adjustment, net | (9,063) |  |  | (9,063) |  |
Stock based compensation | 1,357 |  | 1,357 |  |  |
Stock options exercised; grants, termination and vesting of restricted stock units (net of shares in lieu of taxes) | (2,529) | $ (7) | (2,522) |  |  |
Stock options exercised; grants, termination and vesting of restricted stock units (net of shares in lieu of taxes), Shares |  | (67,969) |  |  |  |
Net income | 520 |  |  |  | 520 |
Balance at Mar. 31, 2020 | $ 334,207 | $ 3,319 | $ 89,757 | $ (14,761) | $ 274,052 | $ (18,160)
Balance (in shares) at Mar. 31, 2020 | 33,188,421 | 33,188,421 |  |  |  | 3,061,040

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