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Acquisitions - Narrative (Details) - USD ($) |  |  | 3 Months Ended
--- | --- | --- | ---
Jan. 01, 2019 | Dec. 20, 2018 | Mar. 31, 2020 | Mar. 31, 2019
American Stainless Tubing, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Purchase price | $ 21,900,000 |  |  |
Net sales |  |  | $ 7,600,000 | $ 9,500,000
Income before income taxes |  |  | $ 300,000 | $ 100,000
$20 million Term loan, due January 1, 2024 |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Debt term | 5 years | 5 years |  |
Principal amount of debt | $ 20,000,000 | $ 20,000,000 |  |
American Stainless | American Stainless Tubing, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Period for which earn out payments will be received | 3 years |  |  |
American Stainless | Earn-Out Payment | American Stainless Tubing, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Earn out payment, target percentage | 6.50% |  |  |

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