Note 5 - Accounts Receivable, Net and Significant Customers

12 Months Ended

Dec. 31, 2011

Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]

Accounts Receivable, Net and Significant Customers

Accounts Receivable, Net and Significant Customers

Account receivable, net as of December 31, 2011 and 2010 was comprised of the following:

(In thousands)	December 31, 2011			December 31, 2010
Gross accounts receivable	$	232,838		$	364,114
Allowance for doubtful accounts	(500		)	(500		)
Allowance for sales returns	(65		)	—
Accounts receivable, net	$	232,273		$	363,614

We determine the allowance requirement, on an account by account basis, by calculating an estimated financial risk for each OEM customer or distributor and taking into account other available information that indicates that receivable balances may not be fully collectible. Account balances are charged off against the allowance when it is probable that the receivable will not be recovered.

We sell our products to original equipment manufacturers, or OEMs, and to electronic components distributors who resell these products to OEMs, or their subcontract manufacturers. Net sales by customer type and net sales to significant customers were as follows:

(Percentage of Net Sales)	2011		2010		2009
Sales to distributors	73	%	81	%	82	%
Sales to OEMs	27	%	19	%	18	%
	100	%	100	%	100	%
Significant Distributors(1):
Arrow Electronics, Inc. ( “Arrow”)	39	%	46	%	45	%
Macnica, Inc. (“Macnica”)	21	%	20	%	15	%

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

One OEM accounted for 13% of our net sales in each of 2011 and 2010 and 11% in 2009. No other individual OEM accounted for more than 10% of our net sales for 2011, 2010 or 2009.

As of December 31, 2011, accounts receivable from Arrow, Macnica and Avnet, Inc. including its affiliates (“Avnet”) individually accounted for approximately 30%, 43% and 11%, respectively, of our total accounts receivable. As of December 31, 2010, accounts receivable from Arrow, Macnica and Avnet individually accounted for approximately 18%, 51% and 12%, respectively, of our total accounts receivable. No other distributor or OEM accounted for more than 10% of our accounts receivable as of December 31, 2011 or 2010.