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v3.19.1

UNAUDITED CONDENSED CONSOLIDATED STATEMENT OF CHANGE IN EQUITY - USD ($) $ in Thousands | Common stock | Additional paid in capital | Accumulated foreign currency translation adjustments | Accumulated unrealized gains (losses) on available-for-sale debt securities | Accumulated deficit | Total
--- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Cumulative effect of applying new accounting standards |  |  |  |  | $ 8,645 | $ 8,645
Beginning balance as adjusted | $ 854 | $ 455,401 | $ (17,867) | $ (3,774) | (222,985) | 211,629
Beginning balance as adjusted, shares | 562,119,334 |  |  |  |  |
Balance at the beginning of the period at Dec. 31, 2017 | $ 854 | 455,401 | (17,867) | (3,774) | (231,630) | 202,984
Balance at the beginning of the period, shares at Dec. 31, 2017 | 562,119,334 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net loss |  |  |  |  | (21,078) | (21,078)
Issuance of shares upon exercise of stock options | $ 4 | 1,530 |  |  |  | 1,534
Issuance of shares upon exercise of stock options (in shares) | 2,740,626 |  |  |  |  |
Foreign currency translation adjustments |  |  | (2,602) |  |  | (2,602)
Unrealized holding gains (losses) on available-for-sale debt securities, net of tax of $0 |  |  |  | (4,056) |  | (4,056)
Reclassification from accumulated other comprehensive income of losses on available-for-sale debt securities included in net income, net of tax of $0 |  |  |  | 1,163 |  | 1,163
Share-based compensation expense |  | 4,672 |  |  |  | 4,672
Balance at the end of the period at Mar. 31, 2018 | $ 858 | 461,603 | (20,469) | (6,667) | (244,063) | 191,262
Balance at the end of the period, shares at Mar. 31, 2018 | 564,859,960 |  |  |  |  |
Balance at the beginning of the period at Dec. 31, 2018 | $ 939 | 574,208 | (9,607) | (156) | (318,499) | $ 246,885
Balance at the beginning of the period, shares at Dec. 31, 2018 | 627,454,270 |  |  |  |  | 627,454,270
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net loss |  |  |  |  | (27,412) | $ (27,412)
Issuance of shares upon exercise of stock options | $ 1 | 35 |  |  |  | 36
Issuance of shares upon exercise of stock options (in shares) | 840,432 |  |  |  |  |
Foreign currency translation adjustments |  |  | (3,543) |  |  | (3,543)
Unrealized holding gains (losses) on available-for-sale debt securities, net of tax of $0 |  |  |  | 210 |  | 210
Share-based compensation expense |  | 3,479 |  |  |  | 3,479
Balance at the end of the period at Mar. 31, 2019 | $ 940 | $ 577,722 | $ (13,150) | $ 54 | $ (345,911) | $ 219,655
Balance at the end of the period, shares at Mar. 31, 2019 | 628,294,702 |  |  |  |  | 628,294,702

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