Summary Of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

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,
	2012		2013		2012		2013
HP	72	%	52	%	66	%	57	%
Tektronix	7	%	21	%	13	%	16	%
Other customers less than 10%	21	%	27	%	21	%	27	%
Total	100	%	100	%	100	%	100	%

Allowance for doubtful accounts

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

	June 30, 2012		June 30, 2013
Balance, beginning of the year	$	203	$	240
Additions to allowance	25		3
Write-offs	—		(213		)
Recoveries	—		(8		)
Balance, quarter ended	$	228	$	22