Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Schedule Results of Operations Since Acquisition (Details)

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Acquisitions - Schedule Results of Operations Since Acquisition (Details) - American Stainless Tubing, Inc. - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Business Acquisition [Line Items]    
Net sales $ 8,468,838 $ 26,539,086
Income before income taxes $ 901,562 $ 2,000,725