Related-Party Transactions	12 Months Ended
Dec. 31, 2021
Related Party Transactions [Abstract]
RELATED-PARTY TRANSACTIONS	NOTE 11 – RELATED-PARTY TRANSACTIONS During the years ended December 31, 2021 and 2020, the Company leased office space from former owners of acquired companies that became shareholders and/or officers of the Company. The Company recognized lease expenses under these leases within the Consolidated Statements of Operations in the amount of $912 thousand and $645 thousand for years ended December 31, 2021 and 2020, respectively. During the years ended December 31, 2021 and 2020, the Company performed certain environmental consulting work for an affiliate of one of its principal shareholders or members and collected fees related to these services in the amount of $111 thousand and $332 thousand, respectively. On February 3, 2020, the Company entered into a subscription agreement with SCST, Inc., a California corporation, pursuant to which it agreed to acquire 105,977 shares of Class A common stock (the “SCST Stock”), for an aggregate purchase price of $1.1 million, in a private placement not registered under the Securities Act, in reliance on the exemption from Registration provided by Section 4(a)(2) of the Securities Act and/or Regulation D promulgated thereunder. The issuance of the SCST Stock was completed in connection with the Atlas Business Combination and served to settle the contingent consideration to them as of December 31, 2019. On February 14, 2020, the Company entered into a non-interest-bearing short-term loan with the former owners of Atlas Intermediate to purchase insurance contracts in the amount of $1.4 million. The loan has not been repaid as of the date of these financial statements and is accounted for in Accrued Liabilities within the Consolidated Balance Sheet. This was repaid during the quarter ended June 30, 2020.

Related-Party Transactions

12 Months Ended

Dec. 31, 2021

NOTE 11 – RELATED-PARTY TRANSACTIONS

During the years ended December 31, 2021 and 2020, the Company leased office space from former owners of acquired companies that became shareholders and/or officers of the Company. The Company recognized lease expenses under these leases within the Consolidated Statements of Operations in the amount of $912 thousand and $645 thousand for years ended December 31, 2021 and 2020, respectively.

During the years ended December 31, 2021 and 2020, the Company performed certain environmental consulting work for an affiliate of one of its principal shareholders or members and collected fees related to these services in the amount of $111 thousand and $332 thousand, respectively.

On February 3, 2020, the Company entered into a subscription agreement with SCST, Inc., a California corporation, pursuant to which it agreed to acquire 105,977 shares of Class A common stock (the “SCST Stock”), for an aggregate purchase price of $1.1 million, in a private placement not registered under the Securities Act, in reliance on the exemption from Registration provided by Section 4(a)(2) of the Securities Act and/or Regulation D promulgated thereunder. The issuance of the SCST Stock was completed in connection with the Atlas Business Combination and served to settle the contingent consideration to them as of December 31, 2019.

On February 14, 2020, the Company entered into a non-interest-bearing short-term loan with the former owners of Atlas Intermediate to purchase insurance contracts in the amount of $1.4 million. The loan has not been repaid as of the date of these financial statements and is accounted for in Accrued Liabilities within the Consolidated Balance Sheet. This was repaid during the quarter ended June 30, 2020.