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 ($)
Jan. 01, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]        
Goodwill   $ 17,557,620   $ 9,799,992
American Stainless Tubing, Inc.        
Finite-Lived Intangible Assets [Line Items]        
Goodwill $ 7,757,628 $ 7,757,628 $ 7,043,534  
American Stainless Tubing, Inc. | Customer Relationships        
Finite-Lived Intangible Assets [Line Items]        
Value of intangible assets acquired $ 10,000,000      
Useful life of finite lived intangible assets acquired 15 years