Note 12 - Palladium Contingent Purchase Price (Detail)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Jun. 30, 2011 USD ($)	Mar. 31, 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 ($)	Dec. 31, 2012 Contingent Purchase Price Original Minimum [Member] EUR (€)
Business Acquisition, Contingent Consideration, Potential Cash Payment	$ 3,702,000	$ 4,397,000	$ 3,739,000	$ 4,148,000	$ 3,960,000	$ 3,689,000	€ 1,500,000	€ 500,000	€ 1,443,000	$ 1,767,000	€ 3,000,000