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Summary Of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 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
 
March 31,
 
2013
 
2014
HP
63
%
 
49
%
Tektronix
12
%
 
15
%
Other customers less than 10%
25
%
 
36
%
Total
100
%
 
100
%
Allowance for doubtful accounts
Balance sheet details are as follows, (in thousands):
 
March 31,
2013
 
March 31,
2014
Balance, beginning of the year
$
240

 
$
23

Additions to allowance
—

 
—

Write-offs
—

 
—

Recoveries
(9
)
 
—

Balance, quarter ended
$
231

 
$
23