Note 4 - Corporate Borrowings And Capital Lease Obligations (Detail) - Indebtedness Outstanding Summary (Parentheticals)	Dec. 31, 2012	Nov. 02, 2012	Jul. 20, 2009	Dec. 31, 2012 Interest [Member]	Dec. 31, 2011 Interest [Member]	Dec. 31, 2012 Variable Interest Rate [Member]	Dec. 31, 2011 Variable Interest Rate [Member]	Dec. 31, 2012 Interest [Member]	Dec. 31, 2011 Interest [Member]	Dec. 31, 2012 Wells Fargo Bank [Member]	Dec. 31, 2011 Wells Fargo Bank [Member]
Revolving Credit Agreement, variable interest rate										2.84%	2.84%
Secured Promissory Note, variable interest rate	2.84%	1.00%	6.39%			6.39%	6.39%
Water Cooling System Capital Lease Obligation, Interest rate				2.61%	2.61%			0.61%	0.61%
Other Capital Lease Obligations, Interest rate				2.61%	2.61%			0.61%	0.61%