Note 12 - Geographic Data (Detail) - International net revenue detail (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net revenue (in Dollars)	$ 24,343	$ 15,944	$ 45,390	$ 32,363
Mexico [Member]
Net revenue (in Dollars)	3,094		6,339
% of consolidated net revenue	12.70%		14.00%
South Africa [Member]
Net revenue (in Dollars)	1,852	646	3,767	1,278
% of consolidated net revenue	7.60%	4.00%	8.30%	3.90%
Canada [Member]
Net revenue (in Dollars)	1,765	1,604	3,204	3,098
% of consolidated net revenue	7.30%	10.00%	7.00%	9.60%
Romania [Member]
Net revenue (in Dollars)	1,763	285	1,969	512
% of consolidated net revenue	7.20%	1.80%	4.30%	1.60%
Japan [Member]
Net revenue (in Dollars)	1,597	1,094	2,869	1,867
% of consolidated net revenue	6.60%	6.90%	6.30%	5.80%
Australia [Member]
Net revenue (in Dollars)	1,384	1,816	2,846	3,919
% of consolidated net revenue	5.70%	11.40%	6.30%	12.10%
Turkey [Member]
Net revenue (in Dollars)	935		1,753
% of consolidated net revenue	3.80%		3.90%
All Others [Member]
Net revenue (in Dollars)	1,072	1,132	2,477	2,800
% of consolidated net revenue	4.40%	7.10%	5.50%	8.60%
International [Member]
Net revenue (in Dollars)	$ 13,462	$ 6,577	$ 25,224	$ 13,474
% of consolidated net revenue	55.30%	41.20%	55.60%	41.60%