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 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Location
Jun. 30, 2012
Dec. 31, 2012
Discontinued Operations and Divestitures [Abstract]          
Number of previously shut down locations     2    
Results of discontinued operations [Abstract]          
Net revenues $ 809,000 $ 599,000 $ 1,472,000 $ 1,215,000  
Interest expense (9,000) (9,000) (13,000) (17,000)  
Operating income (loss) from discontinued operations 67,000 (86,000) 26,000 (294,000)  
Income tax expense (benefit) 24,000 (26,000) 11,000 (96,000)  
Income (loss) from discontinued operations 43,000 (60,000) 15,000 (198,000)  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Property, plant and equipment, net 1,616,000   1,616,000   1,614,000
Allowance for doubtful accounts 25,000   25,000   45,000
Accumulated depreciation 42,588,000   42,588,000   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 578,000 [1]   578,000 [1]   391,000 [1]
Inventories 37,000   37,000   32,000
Other assets 16,000   16,000   16,000
Property, plant and equipment, net 1,616,000 [2]   1,616,000 [2]   1,614,000 [2]
Total assets of discontinued operations 2,247,000   2,247,000   2,053,000
Accounts payable 341,000   341,000   229,000
Accrued expenses and other liabilities 544,000   544,000   528,000
Note payable 53,000   53,000   71,000
Environment liabilities 1,373,000   1,373,000   1,373,000
Total liabilities of discontinued operations 2,311,000   2,311,000   2,201,000
Accumulated depreciation 60,000   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 55,000   55,000   60,000
Total assets of discontinued operations 55,000   55,000   60,000
Accounts payable 15,000   15,000   15,000
Accrued expenses and other liabilities 796,000   796,000   884,000
Environment liabilities 195,000   195,000   241,000
Total liabilities of discontinued operations $ 1,006,000   $ 1,006,000   $ 1,140,000
[1] net of allowance for doubtful accounts of $25,000 and $45,000 as of June 30, 2013 and December 31, 2012, respectively.
[2] net of accumulated depreciation of $60,000 for each period presented.