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Goodwill and Intangible Assets - Narrative (Details) - USD ($) | Jan. 01, 2019 | Mar. 31, 2019 | Dec. 31, 2018
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Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill |  | $ 16,843,526 | $ 9,799,992
American Stainless Tubing, Inc. |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 7,043,534 |  |
American Stainless Tubing, Inc. | Customer Relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Value of intangible assets acquired | $ 10,000,000 |  |
Useful life of finite lived intangible assets acquired | 15 years |  |

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