SEGMENT INFORMATION, REVENUES BY GEOGRAPHY AND SIGNIFICANT CUSTOMERS - Revenues by geography (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Segment Reporting Information [Line Items]                      
Revenues $ 145,267 $ 147,456 $ 153,137 $ 150,087 $ 156,007 $ 148,331 $ 138,439 $ 129,687 $ 595,947 $ 572,464 $ 320,823
Percentage of revenues                 100.00% 100.00% 100.00%
United States                      
Segment Reporting Information [Line Items]                      
Revenues                 $ 187,300 $ 136,600 $ 80,600
Geographical Location | North America                      
Segment Reporting Information [Line Items]                      
Revenues                 $ 197,693 $ 142,438 $ 84,820
Percentage of revenues                 33.00% 25.00% 26.00%
Geographical Location | South America                      
Segment Reporting Information [Line Items]                      
Revenues                 $ 97,118 $ 109,584 $ 65,764
Percentage of revenues                 16.00% 19.00% 21.00%
Geographical Location | Europe, the Middle East and Africa                      
Segment Reporting Information [Line Items]                      
Revenues                 $ 234,383 $ 247,009 $ 127,860
Percentage of revenues                 40.00% 43.00% 40.00%
Geographical Location | Asia Pacific                      
Segment Reporting Information [Line Items]                      
Revenues                 $ 66,753 $ 73,433 $ 42,379
Percentage of revenues                 11.00% 13.00% 13.00%