Summary Of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2014

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				Nine Months Ended
	September 30,				September 30,
	2013		2014		2013		2014
HP	58	%	55	%	56	%	52	%
Tektronix	13	%	5	%	15	%	8	%
Other customers less than 10%	29	%	40	%	29	%	40	%
Total	100	%	100	%	100	%	100	%

Allowance for doubtful accounts

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

	September 30, 2013			September 30, 2014
Balance, beginning of the year	$	240		$	23
Additions to allowance	4			67
Write-offs	(212		)	—
Recoveries	(1		)	(2		)
Balance, quarter ended	$	31		$	88