Note O - Palladium Contingent Purchase Price (Detail)	12 Months Ended												1 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 EUR (€)	Jun. 30, 2010 USD ($)	Dec. 31, 2009 USD ($)	Jun. 02, 2009 EUR (€)	May 16, 2008 USD ($)	May 16, 2008 EUR (€)	May 01, 2010 Contingent Purchase Price Original Minimum [Member] EUR (€)	Dec. 31, 2012 Contingent Purchase Price Additional Minimum [Member] EUR (€)	May 01, 2010 Contingent Purchase Price Additional Minimum [Member] EUR (€)	Jul. 31, 2012 Contingent Purchase Price Payment Euros [Member] EUR (€)	Jul. 31, 2012 Contingent Purchase Price Payment US Dollar [Member] USD ($)	Dec. 31, 2012 Contingent Purchase Price Amended Minimum [Member] EUR (€)
Equity Method Investment, Ownership Percentage							43.00%	57.00%	57.00%
Business Acquisition, Cost of Acquired Entity, Purchase Price							€ 5,000,000	$ 8,448,000	€ 5,350,000
Debt Instrument, Face Amount								5,764,000	3,650,000
Business Acquisition, Contingent Consideration, Potential Cash Payment	2,644,000	3,739,000	3,689,000			0				3,000,000	500,000	500,000			1,500,000
Business Acquisition Contingent Consideration Payment	1,776,000	0	0										1,443,000	1,776,000
Business Acquisition, Contingent Consideration, at Fair Value	$ 2,644,000	$ 0	$ 2,110,000	€ 2,000,000	$ 3,320,000	$ 0