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Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | ECI | Anova Data, Inc. | Common stock | Common stock ECI | Common stock Anova Data, Inc. | Additional paid-in capital | Additional paid-in capital ECI | Additional paid-in capital Anova Data, Inc. | Accumulated deficit | Accumulated other comprehensive (loss) income
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2018 |  |  |  | 106,815,636 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2018 | $ 590,298 |  |  | $ 11 |  |  | $ 1,723,576 |  |  | $ (1,136,992) | $ 3,703
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with employee stock purchase plans (in shares) |  |  |  | 139,390 |  |  |  |  |  |  |
Issuance of common stock in connection with employee stock purchase plan | 506 |  |  |  |  |  | 506 |  |  |  |
Exercise of stock options (in shares) |  |  |  | 126,015 |  |  |  |  |  |  |
Exercise of stock options | 233 |  |  |  |  |  | 233 |  |  |  |
Vesting of restricted stock awards and units (in shares) |  |  |  | 1,296,966 |  |  |  |  |  |  |
Vesting of restricted stock awards and units | 0 |  |  |  |  |  |  |  |  |  |
Vesting of performance-based stock awards (in shares) |  |  |  | 9,466 |  |  |  |  |  |  |
Vesting of performance-based stock units | 0 |  |  |  |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares) |  |  |  | (204,027) |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations | (1,082) |  |  |  |  |  | (1,082) |  |  |  |
Shares issued as consideration in connection with acquisition (in shares) |  |  |  |  |  | 2,948,793 |  |  |  |  |
Shares issued as consideration in connection with acquisition |  |  | $ 15,186 |  |  |  |  |  | $ 15,186 |  |
Reclassification of liability to equity for bonuses converted to stock awards | 1,052 |  |  |  |  |  | 1,052 |  |  |  |
Repurchase and retirement of common stock (in shares) |  |  |  | (975,914) |  |  |  |  |  |  |
Repurchase and retirement of common stock | (4,536) |  |  |  |  |  | (4,536) |  |  |  |
Stock-based compensation expense | 8,154 |  |  |  |  |  | 8,154 |  |  |  |
Other comprehensive income (loss) | 916 |  |  |  |  |  |  |  |  |  | 916
Net (loss) income | 20,288 |  |  |  |  |  |  |  |  | 20,288 |
Ending balance (in shares) at Sep. 30, 2019 |  |  |  | 110,156,325 |  |  |  |  |  |  |
Ending balance at Sep. 30, 2019 | 631,015 |  |  | $ 11 |  |  | 1,743,089 |  |  | (1,116,704) | 4,619
Beginning balance (in shares) at Jun. 30, 2019 |  |  |  | 110,007,237 |  |  |  |  |  |  |
Beginning balance at Jun. 30, 2019 | 626,569 |  |  | $ 11 |  |  | 1,740,563 |  |  | (1,118,354) | 4,349
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  |  |  | 19,009 |  |  |  |  |  |  |
Exercise of stock options | 43 |  |  |  |  |  | 43 |  |  |  |
Vesting of restricted stock awards and units (in shares) |  |  |  | 130,580 |  |  |  |  |  |  |
Vesting of restricted stock awards and units | 0 |  |  |  |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares) |  |  |  | (501) |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations | (2) |  |  |  |  |  | (2) |  |  |  |
Stock-based compensation expense | 2,485 |  |  |  |  |  | 2,485 |  |  |  |
Other comprehensive income (loss) | 270 |  |  |  |  |  |  |  |  |  | 270
Net (loss) income | 1,650 |  |  |  |  |  |  |  |  | 1,650 |
Ending balance (in shares) at Sep. 30, 2019 |  |  |  | 110,156,325 |  |  |  |  |  |  |
Ending balance at Sep. 30, 2019 | $ 631,015 |  |  | $ 11 |  |  | 1,743,089 |  |  | (1,116,704) | 4,619
Beginning balance (in shares) at Dec. 31, 2019 | 110,471,995 |  |  | 110,471,995 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2019 | $ 483,255 |  |  | $ 11 |  |  | 1,747,784 |  |  | (1,267,067) | 2,527
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) | 16,128 |  |  | 16,128 |  |  |  |  |  |  |
Exercise of stock options | $ 29 |  |  |  |  |  | 29 |  |  |  |
Vesting of restricted stock awards and units (in shares) |  |  |  | 1,971,730 |  |  |  |  |  |  |
Vesting of restricted stock awards and units | 1 |  |  | $ 1 |  |  |  |  |  |  |
Vesting of performance-based stock awards (in shares) |  |  |  | 323,752 |  |  |  |  |  |  |
Vesting of performance-based stock units | 0 |  |  |  |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares) |  |  |  | (373,272) |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations | (1,196) |  |  |  |  |  | (1,196) |  |  |  |
Shares issued as consideration in connection with acquisition (in shares) |  |  |  |  | 32,500,000 | 316,551 |  |  |  |  |
Shares issued as consideration in connection with acquisition |  | $ 108,550 | $ 1,630 |  | $ 3 |  |  | $ 108,547 | $ 1,630 |  |
Stock-based compensation expense | 10,167 |  |  |  |  |  | 10,167 |  |  |  |
Other comprehensive income (loss) | (11,826) |  |  |  |  |  |  |  |  |  | (11,826)
Net (loss) income | $ (35,169) |  |  |  |  |  |  |  |  | (35,169) |
Ending balance (in shares) at Sep. 30, 2020 | 145,226,884 |  |  | 145,226,884 |  |  |  |  |  |  |
Ending balance at Sep. 30, 2020 | $ 555,441 |  |  | $ 15 |  |  | 1,866,961 |  |  | (1,302,236) | (9,299)
Beginning balance (in shares) at Jun. 30, 2020 |  |  |  | 144,856,764 |  |  |  |  |  |  |
Beginning balance at Jun. 30, 2020 | 544,777 |  |  | $ 14 |  |  | 1,863,374 |  |  | (1,308,488) | (10,123)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  |  |  | 2,926 |  |  |  |  |  |  |
Exercise of stock options | 6 |  |  |  |  |  | 6 |  |  |  |
Vesting of restricted stock awards and units (in shares) |  |  |  | 454,178 |  |  |  |  |  |  |
Vesting of restricted stock awards and units | 1 |  |  | $ 1 |  |  |  |  |  |  |
Vesting of performance-based stock awards (in shares) |  |  |  | 7,886 |  |  |  |  |  |  |
Vesting of performance-based stock units | 0 |  |  |  |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares) |  |  |  | (94,870) |  |  |  |  |  |  |
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations | (388) |  |  |  |  |  | (388) |  |  |  |
Stock-based compensation expense | 3,969 |  |  |  |  |  | 3,969 |  |  |  |
Other comprehensive income (loss) | 824 |  |  |  |  |  |  |  |  |  | 824
Net (loss) income | $ 6,252 |  |  |  |  |  |  |  |  | 6,252 |
Ending balance (in shares) at Sep. 30, 2020 | 145,226,884 |  |  | 145,226,884 |  |  |  |  |  |  |
Ending balance at Sep. 30, 2020 | $ 555,441 |  |  | $ 15 |  |  | $ 1,866,961 |  |  | $ (1,302,236) | $ (9,299)

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