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Industry Segments (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2016 USD ($) subsidiaries segments Entitiies | Dec. 31, 2015 USD ($) Entitiies | Jan. 03, 2015 USD ($) Entitiies
Segment Reporting Information [Line Items] |  |  |
Number of Reportable Segments | segments | 2 |  |
Goodwill | $ 1,354,730 | $ 1,354,730 | $ 23,250,201
Goodwill impairment | $ 0 | 17,158,249 | 0
Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of subsidiaries (subsidiaries) | subsidiaries | 3 |  |
Goodwill | $ 0 | 0 | 21,895,471
Goodwill impairment | $ 0 | 17,158,249 | 0
Concentration risk (percentage) | 77.00% |  |
Number of suppliers (entities) | Entitiies | 9 |  |
Number of suppliers providing majority of supplies (entities) | Entitiies | 1 |  |
Specialty Chemicals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of subsidiaries (subsidiaries) | subsidiaries | 2 |  |
Goodwill | $ 1,354,730 | 1,354,730 | 1,354,730
Goodwill impairment |  | 0 |
Concentration risk (percentage) | 46.00% |  |
Number of suppliers providing majority of supplies (entities) | Entitiies | 11 |  |
Corporate [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Environmental charges | $ 48,000 | $ 1,000 | $ (13,000)
Supplier One [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (percentage) | 42.00% |  |
Revenue [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (percentage) |  | 14.00% |
Revenue [Member] | Specialty Chemicals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (percentage) | 25.00% | 31.00% | 31.00%
United States [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of major customers (entities) | Entitiies | 0 | 1 | 0
United States [Member] | Specialty Chemicals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of major customers (entities) | Entitiies | 1 | 1 | 1
BRISMET, Palmer and Specialty [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Ownership percentage of subsidiary (percent) | 100.00% | 100.00% |
Manufacturers Soap and Chemical Company [Member] | Specialty Chemicals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Ownership percentage of subsidiary (percent) | 100.00% |  |
Maximum [Member] | Revenue [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (percentage) | 10.00% |  | 10.00%

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