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Equity (Tables) | 12 Months Ended
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Dec. 31, 2020
Accumulated Other Comprehensive Loss |
Rollforward of Accumulated Other Comprehensive Loss | A rollforward of activity within accumulated other comprehensive income (loss) for the periods indicated was as follows (in thousands):
|  | For the Years Ended December 31,
|  | 2020 |  | 2019 |  | 2018
|  | Foreign Currency |  | Other |  | Total |  | Foreign Currency |  | Other |  | Total |  | Foreign Currency |  | Other |  | Total
Balance as of January 1 |  | $ | (65,685) |  |  | $ | (10,021) |  |  | $ | (75,706) |  |  | $ | (65,496) |  |  | $ | 5,002 |  |  | $ | (60,494) |  |  | $ | (62,851) |  |  | $ | (861) |  |  | $ | (63,712) |
Unrealized gains (losses), net of tax |  | 1,413 |  |  | (17,151) |  |  | (15,738) |  |  | (189) |  |  | (15,023) |  |  | (15,212) |  |  | (2,645) |  |  | 5,863 |  |  | 3,218 |
Balance as of December 31 |  | $ | (64,272) |  |  | $ | (27,172) |  |  | $ | (91,444) |  |  | $ | (65,685) |  |  | $ | (10,021) |  |  | $ | (75,706) |  |  | $ | (65,496) |  |  | $ | 5,002 |  |  | $ | (60,494) |
Unrealized foreign currency translation activity, net, for the three years in the period ended December 31, 2020 relates to the Company’s operations in Canada and Mexico. For the year ended December 31, 2020, unrealized investment activity, net, includes unrealized losses on the Waha JV swaps, offset, in part, by unrealized gains on the AVCT convertible debentures. Unrealized investment activity, net, for the years ended December 31, 2019 and 2018 relates to the Waha JV swaps.

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