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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Including Portion Attributable to Noncontrolling Interest [Member] | Noncontrolling Interest [Member] | Parent [Member] | Total | [1]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 |  | $ 3 | [1] | $ (24,000) | $ 215,833 | $ (85,233) | $ (13,059) | $ 969 | $ 94,513 | $ 93,544 |
Balance (in Shares) at Dec. 31, 2017 | [1] | 2,696 |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | 2,434 |  |  |  | 2,434 | 2,434 |
Stock-based compensation expense (in Shares) | [1] | 225 |  |  |  |  |  |  |  |  |
Repurchase of common stock for employee tax withholding |  |  |  |  | (85) |  |  |  | (85) | (85) |
Repurchase of common stock for employee tax withholding (in Shares) | [1] | (4) |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  | (42,368) |  | (57) | (42,425) | (42,368) |
Foreign currency translation adjustment |  |  |  |  |  |  | (2,788) |  | (2,788) | (2,788) |
Balance at Dec. 31, 2018 |  | $ 3 | [1] | (24,000) | 218,182 | (127,601) | (15,847) | 912 | 51,649 | 50,737 |
Balance (in Shares) at Dec. 31, 2018 | [1] | 2,917 |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | 2,868 |  |  |  | 2,868 | 2,868 |
Stock-based compensation expense (in Shares) | [1] | 355 |  |  |  |  |  |  |  |  |
Common stock issuance |  | $ 1 | [1] |  | 4,213 |  |  |  | 4,214 | 4,214 |
Common stock issuance (in Shares) | [1] | 585 |  |  |  |  |  |  |  |  |
Treasury shares retirement |  |  |  | $ 24,000 | (24,000) |  |  |  |  |  |
Treasury shares retirement (in Shares) | [1] | (311) |  |  |  |  |  |  |  |  |
Retirement of restricted stock (in Shares) | [1] | (6) |  |  |  |  |  |  |  |  |
Repurchase of common stock for employee tax withholding |  |  |  |  | (273) |  |  |  | (273) | (273) |
Repurchase of common stock for employee tax withholding (in Shares) | [1] | (19) |  |  |  |  |  |  |  |  |
Preferred stock accrued dividends |  |  |  |  | (483) |  |  |  | (483) | (483) |
Net income (loss) |  |  |  |  |  | (55,548) |  | 169 | (55,379) | (55,548) |
Foreign currency translation adjustment |  |  |  |  |  |  | 1,425 |  | 1,425 | 1,425 |
Balance at Dec. 31, 2019 |  | $ 4 | [1] |  | 200,507 | (183,149) | (14,422) | 1,081 | 4,021 | 2,940 | [2]
Balance (in Shares) at Dec. 31, 2019 | [1] | 3,521 |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | 2,303 |  |  |  | 2,303 | 2,303 |
Stock-based compensation expense (in Shares) | [1] | 64 |  |  |  |  |  |  |  |  |
Conversion of convertible senior notes |  | $ 2 | [1] |  | 20,210 |  |  |  | 20,212 | 20,212 |
Conversion of convertible senior notes (in Shares) | [1] | 2,127 |  |  |  |  |  |  |  |  |
Repurchase of common stock for employee tax withholding |  |  |  |  | (174) |  |  |  | (174) | (174) |
Repurchase of common stock for employee tax withholding (in Shares) | [1] | (17) |  |  |  |  |  |  |  |  |
Preferred stock accrued dividends |  |  |  |  | (1,257) |  |  |  | (1,257) | (1,257) |
Net income (loss) |  |  |  |  |  | (14,274) |  | 130 | (14,144) | (14,274) |
Foreign currency translation adjustment |  |  |  |  |  |  | 1,976 |  | 1,976 | 1,976 |
Adjustment to additional paid-in capital |  |  |  |  | 1 |  |  |  | 1 | 1 |
Balance at Dec. 31, 2020 |  | $ 6 | [1] |  | $ 221,590 | $ (197,423) | $ (12,446) | $ 1,211 | $ 12,938 | $ 11,727 | [2]
Balance (in Shares) at Dec. 31, 2020 | [1] | 5,695 |  |  |  |  |  |  |  |  |
[1] | After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.
[2] | After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.

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