Transaction for the quarter ended June 30, 2020. This divestiture represents a strategic shift in our business and, in accordance with U.S. GAAP, qualified as a discontinued operation. As a result, the operating results and cash flows related to the MDA Business have been reflected as discontinued operations in the Unaudited Condensed Consolidated Statements of Operations.
On June 23, 2020, we announced our intent to exercise our call option to take full ownership of 3D data and analytics firm Vricon, Inc., (“Vricon Acquisition”) for approximately $140 million, or approximately $117 million net of estimated cash at closing. To fund the transaction, we issued $150 million in aggregate principal amount of new senior secured notes, discussed below. The call option was exercised on June 25, 2020, and the Vricon Acquisition closed on July 1, 2020.
On June 25, 2020, we issued $150 million aggregate principal amount of 7.54% senior secured notes due 2027 (“2027 Notes”). The 2027 Notes were offered and sold to qualified institutional buyers in the United States pursuant to Rule 144A and outside the United States pursuant to Regulation S under the Securities Act of 1933, as amended. The 2027 Notes have an interest rate of 7.54% per annum and were issued at a price equal to 98.25% of their face value. Proceeds from the 2027 Notes were used to finance the Vricon Acquisition and the remainder will be used for general corporate purposes.
Separately, on June 25, 2020, we repurchased, in a privately negotiated transaction, $150 million aggregate principal amount of our 9.75% Senior Secured Notes due 2023 (“2023 Notes”). The 2023 Notes were repurchased (the “2023 Notes Repurchase”) at approximately 112.45% of the principal amount on June 25, 2020.
During the three months ended June 30, 2020, we repaid $511 million of borrowings under the Term Loan B facility using proceeds from the MDA Transaction.
Total revenues from continuing operations increased to $439 million from $412 million, or by $27 million, for the three months ended June 30, 2020, compared to the same period of 2019. The increase was primarily driven by a $15 million increase in the Earth Intelligence segment and a $3 million increase in the Space Infrastructure segment.
For the three months ended June 30, 2020, net income from continuing operations was $0 compared to net income of $139 million in the same period of 2019. The decrease is primarily driven by the receipt of satellite insurance proceeds in the second quarter of 2019 that did not reoccur in the same period of 2020. The decrease was partially offset by an increase in revenue of $27 million for the three months ended June 30, 2020 compared to the same period in 2019.
For the second quarter of 2020, Adjusted EBITDA was $138 million and Adjusted EBITDA as a percentage of consolidated revenues (“Adjusted EBITDA margin percentage”) was 31.4%. This is compared to Adjusted EBITDA of $108 million and Adjusted EBITDA margin percentage of 26.2% for the second quarter of 2019. The increase was driven largely by higher Adjusted EBITDA from the Earth Intelligence segment and the Space Infrastructure segment.
Our results of operations for the three months ended June 30, 2020 include the current estimated impact of COVID-19. We had COVID-19 related EAC growth of $6 million within the Space Infrastructure segment which negatively impacted our earnings during the three months ended June 30, 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 three months ended June 30, 2020.
We had total order backlog of $1.9 billion as of June 30, 2020 compared to $1.6 billion as of December 31, 2019. Backlog increased primarily due to an increase in our Space Infrastructure segment backlog as a result of new awards during the year, partially offset by declines in our Earth Intelligence segment. The decrease in backlog within the Earth Intelligence segment is primarily driven by the timing of the exercise of the EnhancedView Contract option year. The decrease was partially offset by increases in geospatial services. Our unfunded contract options totaled $1.3 billion and $1.4 billion as of June 30, 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.