Note 12 - Concentration of Risks (Detail) - Major customers	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Customer A [Member]
Customer	23.00%	26.00%	22.00%	22.00%
Customer B [Member]
Customer	51.00%	36.00%	45.00%	33.00%
Customer C [Member]
Customer				13.00%
Customer D [Member]
Customer	11.00%	30.00%	18.00%	25.00%