Annual report pursuant to Section 13 and 15(d)

Industry Segments - Segment Information (Details)

v3.19.1
Industry Segments - Segment Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]                        
Net sales   $ 72,674,176 $ 77,792,878 $ 71,893,763 $ 58,480,602 $ 52,837,134 $ 54,595,924 $ 51,511,045 $ 42,203,579 $ 280,841,419 $ 201,147,682 $ 138,565,782
Gain (loss) on sale-leaseback $ (2,455,347)                 334,273 334,273 (2,371,778)
Earn-out adjustments                   1,430,682 688,523 0
Operating income (loss)                   21,237,259 2,057,128 (8,246,398)
Acquisition related costs                   1,211,797 794,983 106,227
Interest expense                   2,210,506 985,366 932,572
Change in fair value of interest rate swap                   (19,484) (96,696) 12,997
Other income, net                   2,572,598 (310,043) 0
Income (loss) before income taxes                   16,473,639 1,478,501 (9,191,967)
Identifiable assets   228,398,846       159,874,150       228,398,846 159,874,150  
Depreciation and amortization                   8,775,177 7,737,812 6,694,990
Capital expenditures                   7,354,737 5,278,608 3,044,411
United States                        
Segment Reporting Information [Line Items]                        
Net sales                   273,244,175 196,172,279 132,313,157
Elsewhere                        
Segment Reporting Information [Line Items]                        
Net sales                   7,597,244 4,975,403 6,252,625
Specialty chemicals                        
Segment Reporting Information [Line Items]                        
Net sales                   58,599,274 48,190,487 48,351,245
Stainless steel pipe                        
Segment Reporting Information [Line Items]                        
Net sales                   146,237,630 100,253,823 56,065,642
Seamless carbon steel pipe and tube                        
Segment Reporting Information [Line Items]                        
Net sales                   32,473,950 25,103,641 14,913,133
Liquid storage tanks and separation equipment                        
Segment Reporting Information [Line Items]                        
Net sales                   31,653,832 27,599,731 19,235,762
Galvanized pipe and tube                        
Segment Reporting Information [Line Items]                        
Net sales                   11,876,733 0 0
Operating Segments                        
Segment Reporting Information [Line Items]                        
Net sales                   280,841,419 201,147,682 138,565,782
Operating income (loss)                   31,757,585 10,054,473 (2,305,009)
Corporate, Non-Segment                        
Segment Reporting Information [Line Items]                        
Unallocated corporate expenses                   7,877,847 6,513,839 5,835,162
Earn-out adjustments                   1,430,682 688,523 0
Operating income (loss)                   21,237,259 2,057,128 (8,246,398)
Acquisition related costs                   1,211,797 794,983 106,227
Interest expense                   2,210,506 985,366 932,572
Change in fair value of interest rate swap                   (19,484) (96,696) 12,997
Other income, net                   2,572,598 (310,043) 0
Income (loss) before income taxes                   16,473,639 1,478,501 (9,191,967)
Identifiable assets   8,028,438       4,023,215       8,028,438 4,023,215  
Depreciation and amortization                   149,734 154,552 113,047
Capital expenditures                   87,759 223,089 370,173
Metals Segment                        
Segment Reporting Information [Line Items]                        
Operating income (loss)                   27,783,511 5,664,228 (6,986,510)
Metals Segment | Operating Segments                        
Segment Reporting Information [Line Items]                        
Net sales                   222,242,145 152,957,195 90,214,537
Operating income (loss)                   27,543,907 5,424,624 (4,820,374)
Gain (loss) on sale-leaseback                   239,604 239,604 (2,166,136)
Identifiable assets   192,195,733       130,456,857       192,195,733 130,456,857  
Depreciation and amortization                   7,197,814 6,280,681 5,132,506
Capital expenditures                   5,969,216 3,405,552 2,198,535
Specialty Chemicals Segment                        
Segment Reporting Information [Line Items]                        
Operating income (loss)                   3,974,074 4,390,245 4,681,501
Specialty Chemicals Segment | Operating Segments                        
Segment Reporting Information [Line Items]                        
Net sales                   58,599,274 48,190,487 48,351,245
Operating income (loss)                   3,879,405 4,295,576 4,887,143
Gain (loss) on sale-leaseback                   94,669 94,669 (205,642)
Identifiable assets   $ 28,174,675       $ 25,394,078       28,174,675 25,394,078  
Depreciation and amortization                   1,427,629 1,302,579 1,449,437
Capital expenditures                   $ 1,297,762 $ 1,649,967 $ 475,703