Note 5 - Accounts Receivable, Net and Significant Customers (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Accounts Receivable, Net, Current [Abstract]
Gross accounts receivable	$ 232,838		$ 364,114
Allowance for doubtful accounts	(500)		(500)
Allowance for sales returns	(65)		0
Accounts receivable, net	$ 232,273		$ 363,614
Sales to distributors	0.73		0.81		0.82
Sales To Oems As Percentage Of Net Sales	0.27		0.19		0.18
Sales Revenue, Goods, Net, Percentage	100.00%		100.00%		100.00%
Number of other distributors not presented accounting for more than ten percent of net sales	0		0		0
Number of other customers not presented accounting for more than ten percent of accounts receivable	0		0
Number of other OEMs not presented accounting for more than ten percent of net sales	0		0		0
Arrow Electronics, Inc.
Accounts Receivable, Net, Current [Abstract]
Sales to distributors	0.39	[1]	0.46	[1]	0.45	[1]
Accounts receivable from significant distributors as a percentage of total accounts receivable	0.3		0.18
Huawei Technologies Co., Ltd.
Accounts Receivable, Net, Current [Abstract]
Sales To Oems As Percentage Of Net Sales	0.13		0.13		0.11
Macnica, Inc.
Accounts Receivable, Net, Current [Abstract]
Sales to distributors	0.21	[1]	0.2	[1]	0.15	[1]
Accounts receivable from significant distributors as a percentage of total accounts receivable	0.43		0.51
Avnet, Inc.
Accounts Receivable, Net, Current [Abstract]
Accounts receivable from significant distributors as a percentage of total accounts receivable	0.11		0.12

[1] Except as presented above, no other distributor accounted for greater than 10% of our net sales for 2011, 2010 or 2009.