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Revenues (Tables) | 6 Months Ended
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Jun. 30, 2018
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue by Product Group | The following table presents the Company's revenues, disaggregated by product group. Substantially all of the Company's revenues are derived from contracts with customers where performance obligations are satisfied at a point-in-time.
| Three Months Ended |  | Six Months Ended
| Jun 30, 2018 |  | Jun 30, 2017 |  | Jun 30, 2018 |  | Jun 30, 2017
Storage tank and vessel | $ | 9,071,649 |  |  | $ | 6,057,865 |  |  | $ | 14,847,421 |  |  | $ | 12,331,705 |
Seamless carbon steel pipe and tube | 8,403,288 |  |  | 6,391,212 |  |  | 16,835,901 |  |  | 12,112,688 |
Stainless steel pipe | 38,899,542 |  |  | 26,639,245 |  |  | 70,183,404 |  |  | 44,353,889 |
Specialty chemicals | 15,519,284 |  |  | 12,422,723 |  |  | 28,507,639 |  |  | 24,916,342 |
Total revenues | $ | 71,893,763 |  |  | $ | 51,511,045 |  |  | $ | 130,374,365 |  |  | $ | 93,714,624 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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