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v3.20.1

Consolidated Statements of Stockholders' Equity/Deficit-Unaudited - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Accumulated Other Comprehensive Gain (Loss) | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Balance, shares at Dec. 31, 2018 |  | 106,162 |  |  |  |
Balance, value at Dec. 31, 2018 | $ (26,405) | $ 106 | $ 1,447,954 | $ (1,471,577) | $ (12) | $ (2,876)
Stock-based compensation | 3,411 | $ 0 | 3,411 | 0 | 0 | 0
Issuance of common stock under Equity Incentive Plans, shares |  | 517 |  |  |  |
Issuance of common stock under Equity Incentive Plans, value | 0 | $ 0 | 0 | 0 | 0 | 0
Repurchase of common stock | (941) | 0 | 0 | 0 | 0 | (941)
Net loss | (21,797) | 0 | 0 | (21,797) | 0 | 0
Unrealized gain on investments | $ 45 | $ 0 | 0 | 0 | 45 | 0
Balance, shares at Mar. 31, 2019 | 106,679 | 106,679 |  |  |  |
Balance, value at Mar. 31, 2019 | $ (45,687) | $ 106 | 1,451,365 | (1,493,374) | 33 | (3,817)
Balance, shares at Dec. 31, 2019 |  | 106,679 |  |  |  |
Balance, value at Dec. 31, 2019 | 117,101 | $ 106 | 1,462,172 | (1,341,444) | 84 | (3,817)
Stock-based compensation | 4,432 | $ 0 | 4,432 | 0 | 0 | 0
Issuance of common stock under Equity Incentive Plans, shares |  | 1,032 |  |  |  |
Issuance of common stock under Equity Incentive Plans, value | 2 | $ 2 | 0 | 0 | 0 | 0
Repurchase of common stock | (923) | 0 | 0 | 0 | 0 | (923)
Net loss | (66,611) | 0 | 0 | (66,611) | 0 | 0
Unrealized gain on investments | $ 776 | $ 0 | 0 | 0 | 776 | 0
Balance, shares at Mar. 31, 2020 | 107,711 | 107,711 |  |  |  |
Balance, value at Mar. 31, 2020 | $ 54,777 | $ 108 | $ 1,466,604 | $ (1,408,055) | $ 860 | $ (4,740)

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