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Related Party Activities	6 Months Ended
Related Party Activities	Jun. 30, 2020
Related Party Transactions [Abstract]
Related Party Activities	Related Party Activities New Tech Global Ventures, LLC, and New Tech Global Environmental, LLC, companies in which a director of the Company owns a limited partnership interest, have provided field engineering staff and consultancy services for the Company since 2013. The total cost for such services was approximately $0.5 million and $0.3 million for the three months ended June 30, 2020 and 2019, respectively. In February 2019, the Company purchased a property adjacent to its corporate office for future expansion for approximately $2.0 million. The transaction was funded with cash from operations. The seller of the property is indebted to certain trusts established in favor of the children of one of the Company's directors. The Company understands that the seller may use some of the proceeds of the sale to satisfy such outstanding indebtedness, though the Company has no interest or influence over any particular outcome.