Note 12 - Palladium Contingent Purchase Price (Detail)	3 Months Ended	9 Months Ended						0 Months Ended
Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Jun. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)	Jun. 30, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 Contingent Purchase Price Amended Minimum [Member] EUR (€)	Dec. 31, 2012 Contingent Purchase Price Additional Minimum [Member] EUR (€)	Jul. 12, 2012 Contingent Purchase Price Payment Euros [Member] EUR (€)	Jul. 12, 2012 Contingent Purchase Price Payment US Dollar [Member] USD ($)
Business Acquisition, Contingent Consideration, Potential Cash Payment	$ 1,909,000	$ 3,886,000	$ 1,909,000	$ 3,886,000	$ 3,702,000	$ 3,739,000	$ 4,148,000	$ 3,689,000	€ 1,500,000	€ 500,000
Business Acquisition Contingent Consideration Payment	$ 1,776,000	$ 0	$ 1,776,000	$ 0							€ 1,443,000	$ 1,776,000

Amount of potential cash payments that could result from the contingent consideration arrangement.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_BusinessAcquisitionContingentConsiderationPotentialCashPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant