Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

v3.6.0.2
Income Taxes (Narrative) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Jan. 03, 2015
Income Tax Disclosures [Line Items]      
Income tax payments $ 992,000 $ 2,251,000 $ 2,091,000
Deferred Tax Assets, Valuation Allowance 1,790,000 1,694,000  
State Jurisdiction [Member]      
Income Tax Disclosures [Line Items]      
Net operating loss carryforwards 49,677,000 47,042,000  
Portion of NOL subject to valuation allowance   49,545,000  
Valuation allowance for net operating loss carrryforwards 1,725,000 1,616,000  
Valuation allowance, other deferred tax assets [Member]      
Income Tax Disclosures [Line Items]      
Deferred Tax Assets, Valuation Allowance 65,000    
Bristol Fab and Ram-fab [Member]      
Income Tax Disclosures [Line Items]      
Benefit from income taxes 51,000 $ 651,000 $ 3,807,000
Continuing Operations [Member] | Operating Loss Carryforwards [Member] | State Jurisdiction [Member]      
Income Tax Disclosures [Line Items]      
Increase in valuation allowance during the period $ 96,000