Annual report pursuant to Section 13 and 15(d)

Revenue Recognition (Details)

v3.20.4
Revenue Recognition (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]    
Net sales $ 256,000 $ 305,168
Specialty chemicals    
Disaggregation of Revenue [Line Items]    
Net sales 51,541 54,090
Stainless steel pipe and tube    
Disaggregation of Revenue [Line Items]    
Net sales 154,974 167,907
Heavy wall seamless carbon steel pipe and tube    
Disaggregation of Revenue [Line Items]    
Net sales 23,670 30,607
Fiberglass and steel liquid storage tanks and separation equipment    
Disaggregation of Revenue [Line Items]    
Net sales 5,503 28,722
Galvanized pipe and tube    
Disaggregation of Revenue [Line Items]    
Net sales $ 20,312 $ 23,842