Goodwill consisted of the following (in thousands):

 

 

For the Successor period, the goodwill beginning balance was established as a result of the Business Combination and changes during the period are attributable to additional acquisitions. Refer to Note 4—Acquisitions for additional details regarding these acquisitions. The Company did not identify any impairment for the Successor period from April 1, 2021 to June 30, 2021, the Predecessor period of January 1, 2021 to March 31, 2021 nor the Predecessor periods for the three months ended and six months ended June 30, 2020. Goodwill is reviewed for impairment utilizing a qualitative assessment or a quantitative goodwill impairment test and determined that it was more likely than not that no impairment of goodwill existed as of the evaluation date.

The amount of goodwill allocated to each reporting unit consisted of the following (in thousands):