Note 6 - Inventory (Detail) - Inventory (Parentheticals) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Current Inventory Allowances (in Dollars)	$ 1,198,000
Finished Goods [Member]
Current Inventory Allowances (in Dollars)	1,144,000	1,151,000
Raw Materials [Member]
Current Inventory Allowances (in Dollars)	$ 54,000	$ 38,000