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Acquisitions and Joint Ventures - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Jun. 04, 2020
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Jul. 31, 2020
Business Acquisition Contingent Consideration [Line Items]                
Contingent consideration $ 10,300              
Fair value $ 600              
Increase in estimated fair value of earnout             $ 1,700  
Earnout Payments       $ 600   $ 800    
Earn Out Liability   $ 800     $ 800      
EIS revenue   5,700 $ 5,300   13,900 5,800    
Net revenue   700 400   1,600 600    
Assets Current   189,708     189,708   183,485  
Liabilities   216,149     216,149   $ 215,703  
Pre tax loss   (1,133) (44)   1,296 7,969    
Joint Venture Agreement [Member] | Mader Holdings L.P. [Member]                
Business Acquisition Contingent Consideration [Line Items]                
Percentage of equity hold in joint venture               70.00%
Voting interest in joint venture               50.00%
Non controlling equity interest               30.00%
Net assets acquired               $ 1,000
Assets Current   8,000     8,000      
Noncurrent Assets   8,700     8,700      
Liabilities   8,000     8,000      
Revenues   4,900 3,500   14,500 10,500    
Pre tax loss   300 $ 100   1,500 $ 1,200    
Customer Lists [Member]                
Business Acquisition Contingent Consideration [Line Items]                
Acquired intangible assets   4,200     4,200      
Tradename [Member]                
Business Acquisition Contingent Consideration [Line Items]                
Acquired intangible assets   $ 600     $ 600      
Customer Lists and Tradename [Member]                
Business Acquisition Contingent Consideration [Line Items]                
Intangible assets, Useful Life         10 years      
Environmental Integrated Solutions [Member]                
Business Acquisition Contingent Consideration [Line Items]                
Acquisition of equity 100.00%              
Net assets acquired $ 10,914