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Summary of Significant Accounting Policies (Narrative) (Details) (USD $) | 12 Months Ended
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Dec. 29, 2012 segments subsidiaries | Dec. 31, 2011 | Jan. 01, 2011
Accounting Policies [Line Items] |  |  |
Number of operating segments (segments) | 2 |  |
Number of subsidiaries (subsidiaries) | 3 |  |
Inventory reserves | $ 2,383,000 | $ 2,699,000 |
Intangible asset depreciation period (years) | 15 years |  |
Deferred charges and intangible assets | 9,352,895 | 155,283 |
Accumulated amortization on deferred charges | 605,000 | 37,000 |
Shipping costs | 3,445,000 | 3,088,000 | 2,669,000
Research and development expense | 612,000 | 352,000 | 392,000
Cash value of life insurance | 2,549,220 | 3,092,430 |
Contingent consideration earn-out period (years) | 3 years |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | 1,588,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 1,347,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 1,153,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 984,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | 864,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, after Year Five | 2,812,000 |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance | 0 |  |
Present value contingent consideration liability associated with the Palmer acquisition | 8,152,000 |  |
Interest expense charged during the year | 57,000 |  |
Change in fair value of contingent consideration liability | 0 |  |
Ending balance | 8,209,000 | 0 |
Palmer of Texas [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Contingent consideration earn-out period (years) | 3 years |  |
Allowance for Doubtful Accounts [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Allowance for doubtful accounts pursuant to acquisition | 928,000 | 793,000 | 85,000
Allowance for Doubtful Accounts [Member] | Palmer of Texas [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Number of days subsequent to acquistion for establishment of an allowance for doubtful accounts (days) | 120 days |  |
Allowance for doubtful accounts pursuant to acquisition | 821,000 |  |
Minimum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Accounts receivable, payment terms (days) | 30 days |  |
Maximum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Accounts receivable, payment terms (days) | 45 days |  |
Land improvements and buildings [Member] | Minimum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Depreciation useful life (years) | 10 years |  |
Land improvements and buildings [Member] | Maximum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Depreciation useful life (years) | 40 years |  |
Machinery, fixtures and equipment [Member] | Minimum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Depreciation useful life (years) | 3 years |  |
Machinery, fixtures and equipment [Member] | Maximum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Depreciation useful life (years) | 20 years |  |
Software licenses [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Depreciation useful life (years) | 5 years |  |
Interest Rate Swap [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Fair value of interest rate swap | $ 450,000 |  |
Variable rate basis on interest rate swap | LIBOR |  |
Bristol Metals, LLC, Ram-Fab, LLC and Palmer of Texas Tanks, Inc. [Member] | Metals Segment [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Ownership percentage of subsidiary (percent) | 100.00% |  |
Manufacturers Soap and Chemical Company [Member] | Specialty Chemicals Segment [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Ownership percentage of subsidiary (percent) | 100.00% |  |
Deferred Charges [Member] | Minimum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Intangible asset depreciation period (years) | 3 years |  |
Deferred Charges [Member] | Maximum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Intangible asset depreciation period (years) | 10 years |  |

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration