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Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 15, 2013
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]  
Schedule of Goodwill [Table Text Block]
The change in the carrying amount of goodwill by segment from December 29, 2012 to June 15, 2013 is as follows (in thousands):

 
 
Oil Business
 
Environmental Services
 
Total
 
 
 
 
 
 
 
Balance at December 29, 2012
 
$
1,801

 
$
—

 
$
1,801

   Mirachem Acquisition
 
—

 
809

 
809

Balance at June 15, 2013
 
$
1,801

 
$
809

 
$
2,610