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Industry Segments (Segment Information) (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ 52,837,134 | $ 54,595,924 | $ 51,511,045 | $ 42,203,579 | $ 33,049,871 | $ 34,297,231 | $ 34,906,668 | $ 36,312,012 | $ 201,147,682 | $ 138,565,782 | $ 175,460,438
Operating income (loss) |  |  |  |  |  |  |  |  |  | 10,054,473 | (2,305,009) | (7,425,503)
Unallocated straight line lease cost |  |  |  |  |  |  |  |  |  | 397,071 | 101,633 | 0
Goodwill impairment |  |  |  |  |  |  |  |  |  | 0 | 0 | (17,158,249)
Business interruption proceeds |  |  |  |  |  |  |  |  |  | 0 | 0 | 1,246,024
Loss on sale-leaseback |  |  |  |  |  |  |  |  |  | (25,730) | (2,294,917) | 18,277
Operating income (loss) |  |  |  |  |  |  |  |  |  | 2,745,651 | (8,246,398) | (13,031,199)
Acquisition related costs |  |  |  |  |  |  |  |  |  | 794,983 | 106,227 | 499,761
Interest expense |  |  |  |  |  |  |  |  |  | 985,366 | 932,572 | 1,352,806
Change in fair value of interest rate swap |  |  |  |  |  |  |  |  |  | (96,696) | 12,997 | 41,580
Earn-out adjustment |  |  |  |  |  |  |  |  |  | 688,523 | 0 | (4,897,448)
Casualty insurance gain |  |  |  |  |  |  |  |  |  | 0 | 0 | (923,470)
Other income, net |  |  |  |  |  |  |  |  |  | (310,043) | 0 | (134,389)
Income (loss) before income taxes |  |  |  |  |  |  |  |  |  | 1,478,501 | (9,191,967) | (8,470,278)
Identifiable assets |  | 159,874,150 |  |  |  | 138,638,063 |  |  |  | 159,874,150 | 138,638,063 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 7,737,812 | 6,694,990 | 6,634,391
Capital expenditures |  |  |  |  |  |  |  |  |  | 5,278,608 | 3,044,411 | 10,905,230
Metals Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 152,957,195 | 90,214,537 | 114,908,258
Operating income (loss) |  |  |  |  |  |  |  |  |  | 5,424,624 | (4,820,374) | 2,821,879
Goodwill impairment |  |  |  |  |  |  |  |  |  | 0 | 0 | (17,158,249)
Business interruption proceeds |  |  |  |  |  |  |  |  |  | 0 | 0 | 1,246,024
Identifiable assets |  | 130,456,857 |  |  |  | 109,689,477 |  |  |  | 130,456,857 | 109,689,477 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 6,280,681 | 5,132,506 | 5,172,251
Capital expenditures |  |  |  |  |  |  |  |  |  | 3,405,552 | 2,198,535 | 7,398,517
Specialty Chemicals Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 48,190,487 | 48,351,245 | 60,552,180
Operating income (loss) |  |  |  |  |  |  |  |  |  | 4,295,576 | 4,887,143 | 5,664,843
Identifiable assets |  | 25,394,078 |  |  |  | 22,907,672 |  |  |  | 25,394,078 | 22,907,672 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 1,302,579 | 1,449,437 | 1,376,167
Capital expenditures |  |  |  |  |  |  |  |  |  | 1,649,967 | 475,703 | 3,439,260
Corporate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Unallocated corporate expenses |  |  |  |  |  |  |  |  |  | 6,116,768 | 5,733,529 | 5,105,935
Operating income (loss) |  |  |  |  |  |  |  |  |  | 2,745,651 | (8,246,398) | (13,031,199)
Acquisition related costs |  |  |  |  |  |  |  |  |  | 794,983 | 106,227 | 499,761
Interest expense |  |  |  |  |  |  |  |  |  | 985,366 | 932,572 | 1,352,806
Change in fair value of interest rate swap |  |  |  |  |  |  |  |  |  | (96,696) | 12,997 | 41,580
Earn-out adjustment |  |  |  |  |  |  |  |  |  | 688,523 | 0 | (4,897,448)
Casualty insurance gain |  |  |  |  |  |  |  |  |  | 0 | 0 | (923,470)
Other income, net |  |  |  |  |  |  |  |  |  | (310,043) | 0 | (134,389)
Income (loss) before income taxes |  |  |  |  |  |  |  |  |  | 1,478,501 | (9,191,967) | (8,470,278)
Identifiable assets |  | $ 4,023,215 |  |  |  | 6,040,914 |  |  |  | 4,023,215 | 6,040,914 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 154,552 | 113,047 | 85,973
Capital expenditures |  |  |  |  |  |  |  |  |  | 223,089 | 370,173 | 67,453
United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 196,172,279 | 132,313,157 | 167,185,319
Elsewhere [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 4,975,403 | 6,252,625 | 8,275,119
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 201,147,682 | 138,565,782 | 175,460,438
Specialty Chemicals - Product Group [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 48,190,487 | 48,351,245 | 60,552,180
Stainless Steel Pipe - Product Group [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 100,523,823 | 56,065,642 | 77,849,443
Seamless Carbon Steel Pipe and Tube - Product Group [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 25,103,641 | 14,913,133 | 18,013,326
Liquid Storage Tanks and Separation Equipment - Product Group [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 27,599,731 | 19,235,762 | 19,045,489
Sale-leaseback Transaction [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss on sale-leaseback | $ 2,455,347 |  |  |  |  | $ (83,568) | $ 2,455,347 |  |  | 334,273 | (2,371,778) | 0
Sale-leaseback Transaction [Member] | Metals Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss on sale-leaseback |  |  |  |  |  |  |  |  |  | (239,604) | 2,166,136 | 0
Sale-leaseback Transaction [Member] | Chemical Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss on sale-leaseback |  |  |  |  |  |  |  |  |  | $ 94,669 | $ (205,642) | $ 0

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