Summary Of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2012

Accounting Policies [Abstract]

Net revenue by major customer

Net revenue by major customer is as follows (as a percentage of total net revenue):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2011		2012		2011		2012
HP	77	%	72	%	77	%	66	%
Tektronix	5		7		4		13
Other customers less than 10%	18		21		19		21
Total	100	%	100	%	100	%	100	%

Allowance for doubtful accounts

Balance sheet details are as follows, (in thousands):

	June 30, 2011		June 30, 2012
Balance, beginning of the year	$	—	$	203
Additions to allowance	—		25
Balance, quarter ended	$	—	$	228