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 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Business Acquisition [Line Items]    
Net sales $ 8,557,027 $ 18,070,247
Income before income taxes $ 992,041 $ 1,099,163