On July 1, 2020, we closed the acquisition of Vricon Inc. (“Vricon”) and purchased the remaining 50% ownership interest in Vricon (“Vricon Acquisition”) for $143 million, or $120 million, net of cash at closing. To fund the transaction, we issued $150 million in aggregate principal amount of new senior secured notes due 2027.
Total revenues from continuing operations increased to $467 million from $410 million, or by $57 million, for the three months ended December 31, 2020, compared to the same period in 2019. The increase was primarily driven by an increase in the Space Infrastructure segment which was partially offset by a decrease in the Earth Intelligence segment. The decrease in Earth Intelligence is primarily driven by a $30 million decrease in the recognition of revenue related to the EnhancedView Contract. We recognized $30 million of deferred revenue from the EnhancedView Contract for the three months ended December 31, 2019, compared to none for the three months ended December 31, 2020.
Total revenues from continuing operations increased to $1,723 million from $1,666 million, or by $57 million, for the year ended December 31, 2020 compared to the same period in 2019. The increase was primarily driven by an increase in the Space Infrastructure segment partially offset by a decrease in the Earth Intelligence segment. The decrease was primarily driven by a $40 million decrease in the recognition of deferred revenue related to the EnhancedView Contract. We recognized $120 million of deferred revenue from the EnhancedView Contract for the year ended December 31, 2019, compared to $80 million for the year ended December 31, 2020, as it was fully recognized as of August 31, 2020.
For the three months ended December 31, 2020, net loss (income) from continuing operations decreased to a net loss of $52 million from net income of $53 million, or by $105 million, compared to the same period in 2019. The decrease was primarily driven by a gain on sale of assets of $136 million in 2019 that did not reoccur in 2020 partially offset by increases in revenues in the Space Infrastructure segment.
For the year ended December 31, 2020, net loss (income) from continuing operations decreased to a net loss of $46 million from net income of $83 million, or by $129 million, compared to the same period in 2019. The decrease was primarily driven by the receipt of satellite insurance proceeds of $183 million and a gain on sale of assets of $136 million in 2019 that did not reoccur in 2020. The decrease was partially offset by an $85 million gain on remeasurement of the previously held equity interest in Vricon and increases in revenues in the Space Infrastructure segment.
For the three months ended December 31, 2020, Adjusted EBITDA was $95 million and Adjusted EBITDA as a percentage of consolidated revenues (“Adjusted EBITDA margin percentage”) was 20.3%. This is compared to Adjusted EBITDA of $100 million and Adjusted EBITDA margin percentage of 24.4% for the fourth quarter of 2019. The decrease was driven by lower Adjusted EBITDA from the Earth Intelligence segment primarily as a result of a $30 million decrease in deferred revenue recognized related to the EnhancedView Contract discussed above, partially offset by higher Adjusted EBITDA from the Space Infrastructure segment.
For the year ended December 31, 2020, Adjusted EBITDA was $422 million and Adjusted EBITDA as a percentage of consolidated revenues was 24.5%. This is compared to Adjusted EBITDA of $416 million and Adjusted EBITDA margin percentage of 25.0% for the year ended 2019. The increase was driven by higher Adjusted EBITDA from the Space Infrastructure segment and lower corporate and other expenses partially offset by lower Adjusted EBITDA from the Earth Intelligence segment primarily as a result of a $40 million decrease in deferred revenue recognized related to the EnhancedView Contract discussed above.
Our results of operations for the year ended December 31, 2020 include the current estimated impact of COVID-19. We had COVID-19 related EAC growth of $27 million within the Space Infrastructure segment, which negatively impacted earnings for the year ended December 31, 2020. The changes in the EACs are due to increases in estimated program costs associated with the COVID-19 operating posture and the estimated impact of certain items such as supplier delays and increased labor hours along with actuals realized during the year ended December 31, 2020.
We had total order backlog of $1.9 billion as of December 31, 2020 compared to $1.6 billion as of December 31, 2019. The increase in backlog was primarily driven by an increase in the Space Infrastructure segment due to new contracts with the U.S. government. There was also a decrease in the Earth Intelligence segment driven by revenue recognized during the period, partially offset by the annual exercise of the $300 million EnhancedView Contract option. Our unfunded contract options totaled $0.9 billion and $1.4 billion as of December 31, 2020 and December 31, 2019, respectively.
Financial Highlights
In addition to results reported in accordance with U.S. GAAP, we use certain non-GAAP financial measures as supplemental indicators of its financial and operating performance. These non-GAAP financial measures include EBITDA and Adjusted EBITDA. We believe these supplementary financial measures reflect the Company’s ongoing business in a manner that allows for meaningful period-to-period comparisons and analysis of trends in its business.