| Schedule of segment reporting information, by segment | 
        
Revenue are attributed to geographic location based on customer location. The Company's geographic operations are as follows:  
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in thousands  | 
   | 
   | 
   | 
   | 
   | 
 
   | 
   | 
Three Months Ended  | 
   | 
Six Months Ended  | 
   | 
 
 
  | 
   | 
December 31, 2014  | 
   | 
December 31, 2013  | 
   | 
December 31, 2014  | 
   | 
December 31, 2013  | 
   | 
 
Revenue by geographic region:  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
United States  | 
   | 
$  | 
1,345,428  | 
 
  | 
   | 
$  | 
1,256,344  | 
 
  | 
   | 
$  | 
2,658,914  | 
 
  | 
   | 
$  | 
2,556,790  | 
 
  | 
   | 
 
Europe  | 
   | 
64,460  | 
 
  | 
   | 
121,760  | 
 
  | 
   | 
119,410  | 
 
  | 
   | 
192,064  | 
 
  | 
   | 
 
North America, excluding United States  | 
   | 
110,057  | 
 
  | 
   | 
100,502  | 
 
  | 
   | 
181,836  | 
 
  | 
   | 
177,268  | 
 
  | 
   | 
 
Asia Pacific  | 
   | 
18,732  | 
 
  | 
   | 
9,206  | 
 
  | 
   | 
30,044  | 
 
  | 
   | 
56,533  | 
 
  | 
   | 
 
Africa  | 
   | 
25  | 
 
  | 
   | 
—  | 
 
  | 
   | 
25  | 
 
  | 
   | 
—  | 
 
  | 
   | 
 
Australia  | 
   | 
167  | 
 
  | 
   | 
879  | 
 
  | 
   | 
2,106  | 
 
  | 
   | 
2,029  | 
 
  | 
   | 
 
South America  | 
   | 
2  | 
 
  | 
   | 
—  | 
 
  | 
   | 
2  | 
 
  | 
   | 
32  | 
 
  | 
   | 
 
Total revenue  | 
   | 
$  | 
1,538,871  | 
 
  | 
   | 
$  | 
1,488,691  | 
 
  | 
   | 
$  | 
2,992,337  | 
 
  | 
   | 
$  | 
2,984,716  | 
 
  | 
   | 
 
  
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in thousands  | 
   | 
   | 
   | 
   | 
   | 
 
 
  | 
   | 
December 31, 2014  | 
   | 
June 30, 2014  | 
   | 
 
Inventories by geographic region:  | 
   | 
   | 
   | 
   | 
   | 
 
United States  | 
   | 
$  | 
201,825  | 
 
  | 
   | 
$  | 
159,145  | 
 
  | 
   | 
 
Europe  | 
   | 
9,475  | 
 
  | 
   | 
10,500  | 
 
  | 
   | 
 
North America, excluding United States  | 
   | 
3,846  | 
 
  | 
   | 
4,091  | 
 
  | 
   | 
 
Asia  | 
   | 
8,625  | 
 
  | 
   | 
1,818  | 
 
  | 
   | 
 
Total inventories  | 
   | 
$  | 
223,771  | 
 
  | 
   | 
$  | 
175,554  | 
 
  | 
   | 
 
  
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in thousands  | 
   | 
   | 
   | 
   | 
   | 
 
   | 
   | 
December 31, 2014  | 
   | 
June 30, 2014  | 
   | 
 
Total assets by geographic region:  | 
   | 
   | 
   | 
   | 
   | 
 
United States  | 
   | 
$  | 
350,982  | 
 
  | 
   | 
$  | 
285,092  | 
 
  | 
   | 
 
Europe  | 
   | 
10,485  | 
 
  | 
   | 
14,137  | 
 
  | 
   | 
 
North America, excluding United States  | 
   | 
3,846  | 
 
  | 
   | 
4,091  | 
 
  | 
   | 
 
Asia  | 
   | 
8,625  | 
 
  | 
   | 
1,818  | 
 
  | 
   | 
 
Total assets  | 
   | 
$  | 
373,938  | 
 
  | 
   | 
$  | 
305,138  | 
 
  | 
   | 
 
  
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in thousands  | 
   | 
   | 
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   | 
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   | 
   | 
December 31, 2014  | 
   | 
June 30, 2014  | 
   | 
 
Total long term assets by segment/geographic region:  | 
   | 
   | 
   | 
   | 
   | 
 
United States  | 
   | 
$  | 
11,267  | 
 
  | 
   | 
$  | 
9,726  | 
 
  | 
   | 
 
     Europe  | 
   | 
80  | 
 
  | 
   | 
89  | 
 
  | 
   | 
 
Total long-term assets  | 
   | 
$  | 
11,347  | 
 
  | 
   | 
$  | 
9,815  | 
 
  | 
   | 
 
  
 
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