Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Narrative (Details)

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Goodwill and Intangible Assets - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Goodwill [Line Items]            
Balance at September 30, 2020 $ 6,810,000     $ 6,810,000    
Goodwill impairment 10,748,000   $ 0 10,748,000 $ 0  
Estimated fair market value 12,131,000     $ 12,131,000   $ 15,714,000
Palmer of Texas | Customer Lists            
Goodwill [Line Items]            
Estimated fair market value   $ 0        
Asset impairments   $ 1,300,000        
Welded Pipe & Tube            
Goodwill [Line Items]            
Fair value greater than carrying value   1.70%        
Goodwill impairment $ 10,700,000 $ 0        
Fair value less than carrying value 9.70%     9.70%    
Metals Segment            
Goodwill [Line Items]            
Balance at September 30, 2020 $ 5,455,000     $ 5,455,000    
Goodwill impairment       10,748,000    
Metals Segment | Welded Pipe & Tube            
Goodwill [Line Items]            
Balance at September 30, 2020 $ 16,200,000 $ 16,200,000   $ 16,200,000