Summary of Significant Accounting Policies Goodwill (Details) (USD $)	6 Months Ended		6 Months Ended
Jun. 15, 2013	Dec. 29, 2012	Jun. 15, 2013 Oil Business Segment [Member]	Dec. 29, 2012 Oil Business Segment [Member]	Jun. 15, 2013 Environmental Services Segment [Member]	Dec. 29, 2012 Environmental Services Segment [Member]	Dec. 31, 2012 Mirachem Acquisition [Member]
Goodwill [Line Items]
Goodwill	$ 2,610,000	$ 1,801,000	$ 1,801,000	$ 1,801,000	$ 809,000	$ 0.00	$ 809,000
Goodwill, Acquired During Period	$ 809,000		$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant