Note O - Palladium Contingent Purchase Price (Detail) - Change In The Contingent Purchase Price (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Beginning balance		$ 3,739,000	$ 3,689,000	$ 0
Initial recognition and change in the net present value of the CPP	2,110,000
Ending balance		2,644,000	3,739,000	3,689,000
Payment		(1,776,000)	0	0
Initial Recognition Of The NPV Of The CPP [Member]
Initial recognition and change in the net present value of the CPP		0	0	3,320,000
Palladium [Member]
Initial recognition and change in the net present value of the CPP		$ 681,000	$ 50,000	$ 369,000