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Business Combinations | 12 Months Ended
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Dec. 31, 2023
Business Combinations [Abstract] |
Business Combinations | Note 3 — Business Combinations Alliance Acquisition On July 1, 2022, we completed our acquisition of Alliance. The Alliance acquisition extended our energy transition strategy by adding shallow water capabilities into the growing offshore decommissioning market. The aggregate purchase price of the Alliance acquisition was $145.7 million, consisting of $119.0 million of cash on hand and the acquisition-date estimated fair value of $26.7 million related to the post-closing earn-out consideration. The earn-out was calculated based on certain financial metrics of the Helix Alliance business for 2022 and 2023 relative to amounts as set forth in the Equity Purchase Agreement dated May 16, 2022. During the fourth quarter 2023, we finalized the calculation and agreed with the seller in the Alliance transaction on an $85.0 million earn-out expected to be paid in cash in April 2024. As of December 31, 2023, the Alliance earn-out consideration is reported at $85.0 million in “Accrued liabilities” in the accompanying consolidated balance sheet (Note 4). The following table summarizes the purchase consideration and the preliminary purchase price allocation to estimated fair values of the identifiable assets acquired and liabilities assumed as of July 1, 2022 (in thousands): ​
​ | ​ | ​ | ​
​ | ​ | July 1, 2022
Cash consideration | ​ | $ | 118,961
Contingent consideration | ​ |  | 26,700
Total fair value of consideration transferred | ​ | $ | 145,661
​ | ​ | ​ | ​
Assets acquired: | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 6,336
Accounts receivable | ​ | ​ | 43,378
Other current assets | ​ | ​ | 6,077
Property and equipment | ​ | ​ | 117,321
Operating lease right-of-use assets | ​ | ​ | 1,205
Intangible assets | ​ | ​ | 1,500
Other assets | ​ |  | 2,133
Total assets acquired | ​ | ​ | 177,950
Liabilities assumed: | ​ | ​ | ​
Accounts payable | ​ | ​ | 20,480
Accrued liabilities | ​ | ​ | 3,073
Operating lease liabilities | ​ |  | 1,205
Deferred tax liabilities | ​ |  | 7,531
Total liabilities assumed | ​ |  | 32,289
Net assets acquired | ​ | $ | 145,661
​ The pro forma summary table below presents the results of operations as if the Alliance acquisition had occurred on January 1, 2021 (in thousands). The unaudited pro forma summary includes certain transaction accounting adjustments as necessary and uses estimates and assumptions based on information available at the time. The pro forma summary is provided for illustrative purposes only and does not purport to represent Helix’s actual consolidated results of operations had the acquisition been completed as of the date presented, nor should it be considered indicative of Helix’s future consolidated results of operations. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ | ​ | 2022 |  | 2021
Revenues | ​ | $ | 952,837 | ​ | $ | 789,051
Net loss | ​ | ​ | (79,686) | ​ | ​ | (56,203)
​ STL Acquisition In May 2019, we acquired a 70% controlling interest in Subsea Technologies Group Ltd. (“STL”), a subsea engineering firm based in Aberdeen, Scotland. In June 2021, we acquired the remaining 30% interest in STL, which had been recognized as temporary equity. STL is included in our Well Intervention segment and its revenue and earnings are immaterial to our consolidated results.

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