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Summary of Significant Accounting Policies (Tables)
 9 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]  
Revenue by Major Product Category
Revenue is also classified by major product category and is presented below:

 
 
For the three months ended June 30,
 
For the nine months ended June 30,
(in thousands)
 
2019
 
% of Revenue
 
2018
 
% of Revenue
 
2019
 
% of Revenue
 
2018
 
% of Revenue
Broadband
 
$
9,761

 
57
%
 
13,650

 
77
%
 
$
41,238

 
66
%
 
48,195

 
80
%
Chips
 
1,854

 
11
%
 
2,476

 
14
%
 
9,570

 
15
%
 
7,522

 
12
%
Navigation
 
5,604

 
32
%
 
1,591

 
9
%
 
12,157

 
19
%
 
4,659

 
8
%
Total revenue
 
$
17,219

 
100
%
 
$
17,717

 
100
%
 
$
62,965

 
100
%
 
$
60,376

 
100
%