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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands | Total | Common stock | Additional paid-in capital | Accumulated deficit | Accumulated other comprehensive loss | Non controlling interest
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 1,021,944 | $ 22 | $ 1,059,120 | $ (39,266) | $ (147) | $ 2,215
Total comprehensive loss | (81,650) |  |  | (81,008) | (256) | (386)
Issuance of common stock | 3 | 5 | (2) |  |  |
Amortization of restricted stock units | 5,611 |  | 5,611 |  |  |
Acquisition of non-controlling interests | (2,000) |  | (1,126) |  |  | (874)
Balance at Sep. 30, 2018 | 943,908 | 27 | 1,063,603 | (120,274) | (403) | 955
Balance at Jun. 30, 2018 | 975,526 | 26 | 1,064,039 | (89,378) | (403) | 1,242
Total comprehensive loss | (31,183) |  |  | (30,896) |  | (287)
Issuance of common stock | 1 | 1 |  |  |  |
Amortization of restricted stock units | (436) |  | (436) |  |  |
Balance at Sep. 30, 2018 | 943,908 | 27 | 1,063,603 | (120,274) | (403) | 955
Balance at Dec. 31, 2018 | 1,144,923 | 37 | 1,352,388 | (210,783) | 2,194 | 1,087
Total comprehensive loss | (80,645) |  |  | (81,890) |  | 1,245
Issuance of common stock from exercise of warrants | 2 | 2 |  |  |  |
Amortization/cancellation of restricted stock units | 13,484 |  | 13,484 |  |  |
Balance at Sep. 30, 2019 | 1,077,764 | 39 | 1,365,872 | (292,673) | 2,194 | 2,332
Balance at Jun. 30, 2019 | 1,115,539 | 38 | 1,359,842 | (248,473) | 2,194 | 1,938
Total comprehensive loss | (43,806) |  |  | (44,200) |  | 394
Issuance of common stock from exercise of warrants |  | 1 | (1) |  |  |
Amortization/cancellation of restricted stock units | 6,031 |  | 6,031 |  |  |
Balance at Sep. 30, 2019 | $ 1,077,764 | $ 39 | $ 1,365,872 | $ (292,673) | $ 2,194 | $ 2,332

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