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Industry Segments (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2015 USD ($) subsidiaries segments Entitiies | Jan. 03, 2015 USD ($) Entitiies | Dec. 28, 2013 USD ($) Entitiies
Segment Reporting Information [Line Items] |  |  |
Number of Reportable Segments | segments | 2 |  |
Goodwill | $ 1,354,730 | $ 23,250,201 | $ 17,252,678
Goodwill, Impairment Loss | $ 17,158,249 | 0 | 0
Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of subsidiaries (subsidiaries) | subsidiaries | 3 |  |
Goodwill | $ 0 | 21,895,471 | 15,897,948
Goodwill, Impairment Loss | $ 17,158,249 | 0 | 0
Concentration risk (percentage) | 78.00% |  |
Number of suppliers (entities) | Entitiies | 7 |  |
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 Loss | $ 0 |  |
Concentration risk (percentage) | 45.00% |  |
Number of suppliers providing majority of supplies (entities) | Entitiies | 8 |  |
Corporate [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Environmental charges | $ 93,000 | $ (13,000) | $ 17,000
Supplier One [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (percentage) | 34.00% |  |
Revenue [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (percentage) | 14.00% |  | 10.00%
Revenue [Member] | Specialty Chemicals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (percentage) | 31.00% | 31.00% | 40.00%
United States [Member] | Metals Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of major customers (entities) | Entitiies | 1 | 0 | 1
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% |  |
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% |

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