XML 42 R32.htm IDEA: XBRL DOCUMENT v3.7.0.1
Segment Information (Detail) - Major customers - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Sep. 30, 2016
Segment Reporting Information [Line Items]          
Segment Reporting, Disclosure of Major Customers .1 .1 0.1 .1  
percent of accounts receivable     10.00% 10.00%  
Customer A          
Segment Reporting Information [Line Items]          
Amount (in Dollars) $ 8.2 $ 3.6 $ 14.8 $ 12.0  
% of Total Revenues 27.00% 13.00% 20.00% 15.00%  
Accounts Receivable, Gross $ 3.7   $ 3.7   $ 3.0
concentration risk, percentage, accounts receivable 18.00%   18.00%   15.00%
Customer B          
Segment Reporting Information [Line Items]          
Amount (in Dollars) $ 2.3 $ 3.1 $ 8.3 $ 10.7  
% of Total Revenues 7.00% 11.00% 11.00% 14.00%  
Accounts Receivable, Gross $ 2.2   $ 2.2   $ 2.5
concentration risk, percentage, accounts receivable 10.00%   10.00%   13.00%
Customer C [Member]          
Segment Reporting Information [Line Items]          
Amount (in Dollars) $ 1.8 $ 2.8 $ 4.1 $ 4.5  
% of Total Revenues 6.00% 10.00% 5.00% 6.00%  
Accounts Receivable, Gross $ 0.5   $ 0.5   $ 0.4
concentration risk, percentage, accounts receivable 2.00%   2.00%   2.00%