Gain on Sale of Dry Strip Assets and Intellectual Property (Details) (USD $)	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2013 Dry Strip Product Line [Member]	Jun. 30, 2013 Dry Strip Product Line [Member]	Dec. 31, 2012 Maximum [Member] Dry Strip Product Line [Member]
Sale of assets
Contingent purchase price					$ 2,000,000
Gain on sale of dry strip assets and intellectual property	$ 799,000	$ 1,167,000	$ 800,000	$ 1,200,000

The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228

Name:	us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration