Note 12 - Major Customers (Detail) - Summary of Major Customers	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
A [Member] | Sales Revenue, Goods, Net [Member]
Major Customers Percentage of Revenue	32.00%	27.00%	21.00%
Major Customers Percentage of Accounts Receivable	32.00%	27.00%	21.00%
A [Member] | Accounts Receivable [Member]
Major Customers Percentage of Revenue	34.00%	33.00%
Major Customers Percentage of Accounts Receivable	34.00%	33.00%
B [Member] | Sales Revenue, Goods, Net [Member]
Major Customers Percentage of Revenue	0.00%	0.00%	0.00%
Major Customers Percentage of Accounts Receivable	0.00%	0.00%	0.00%
B [Member] | Accounts Receivable [Member]
Major Customers Percentage of Revenue	11.00%	0.00%
Major Customers Percentage of Accounts Receivable	11.00%	0.00%
Accounts Receivable [Member]
Major Customers Percentage of Revenue	10.00%
Major Customers Percentage of Accounts Receivable	10.00%