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Dispositions and Closures (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 01, 2014 | Sep. 30, 2014 | Sep. 27, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Jan. 03, 2015 | Aug. 29, 2014 | Jun. 27, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Loss before income taxes |  |  |  | $ (99,334) | $ (1,251,058) | $ (7,156,524) |  |
Ram Fab [Member] |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Transaction value (less than) |  |  |  |  |  |  | $ 10,000,000 |
Closing costs associated with closure of facility |  |  | $ 1,996,000 |  |  |  |  |
Loss before income taxes |  |  | $ 947,000 |  |  |  |  |
Bristol Fab [Member] |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Closing costs associated with closure of facility |  |  |  |  | 1,902,000 | 6,988,000 |  |
Pension withdrawal liability |  |  |  |  | 644,000 |  |  | $ 1,900,000
Bristol Fab and Ram-fab [Member] |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Net sales |  |  |  | 0 | 0 | 21,963,078 |  |
Loss before income taxes |  |  |  | (150,334) | (1,902,058) | (10,963,524) |  |
Benefit from income taxes |  |  |  | (51,000) | (651,000) | (3,807,000) |  |
Net loss from discontinued operations |  |  |  | (99,334) | (1,251,058) | $ (7,156,524) |  |
Pending Litigation [Member] | Synalloy Fabrication, LLC Customer Breach of Contract Case [Member] |  |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |  |
Litigation damages sought |  | $ 3,300,000 |  |  |  |  |  |
Pending Litigation [Member] | Synalloy Fabrication, LLC Customer Breach of Contract Case [Member] | Bristol Fab [Member] |  |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |  |
Litigation damages sought |  |  |  | $ 99,000 | $ 1,251,000 |  |  |
Withdrawal from Multiemployer Defined Benefit Plan [Member] | Bristol Fab [Member] |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Term | 26 months |  |  |  |  |  |  |
Stated interest rate (percent) |  |  |  |  | 4.51% |  |  |

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