Note 1 - General (Detail)	9 Months Ended
Sep. 30, 2012
Segment Reporting, Additional Information about Entity's Reportable Segments	The Company has two reportable geographic segments - North America (sales through DPC) and Europe (sales through DPL).

Additional information about the entity or its reportable segments that may contribute to an understanding of the enterprise.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration