Quarterly report pursuant to sections 13 or 15(d)

Discontinued Operations and Divestitures (Details)

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Discontinued Operations and Divestitures (Details) (USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Discontinued Operations and Divestitures [Abstract]      
Number of previously shut down locations 2    
Results of discontinued operations [Abstract]      
Net revenues $ 663,000 $ 616,000  
Interest expense (5,000) (9,000)  
Operating loss from discontinued operations (40,000) (208,000)  
Income tax benefit (13,000) (70,000)  
Loss from discontinued operations (27,000) (138,000)  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Property, plant and equipment, net 1,616,000   1,614,000
Allowance for doubtful accounts   25,000 45,000
Accumulated depreciation 41,498,000   40,376,000
Held for sale [Member]
      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Accounts receivable, net 484,000 [1]   391,000 [1]
Inventories 38,000   32,000
Other assets 21,000   16,000
Property, plant and equipment, net 1,616,000 [2]   1,614,000 [2]
Total assets related to discontinued operations 2,159,000   2,053,000
Accounts payable 307,000   229,000
Accrued expenses and other liabilities 549,000   528,000
Note payable 62,000   71,000
Environment liabilities 1,374,000   1,373,000
Total liabilities related to discontinued operations 2,292,000   2,201,000
Accumulated depreciation 60,000   60,000
Not held for sale [Member]
      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Other assets 57,000   60,000
Total assets related to discontinued operations 57,000   60,000
Accounts payable 15,000   15,000
Accrued expenses and other liabilities 830,000   884,000
Environment liabilities 199,000   241,000
Total liabilities related to discontinued operations $ 1,044,000   $ 1,140,000
[1] net of allowance for doubtful accounts of $25,000 and $45,000 as of March 31, 2013 and December 31, 2012, respectively.
[2] net of accumulated depreciation of $60,000 for each period presented.