SEGMENT INFORMATION (Revenues and Long-Lived Assets by Geographic Area) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Total Consolidated Revenue	$ 319,787	$ 310,070	$ 308,211	$ 293,143	$ 315,216	$ 299,138	$ 301,513	$ 292,042	$ 1,231,211	$ 1,207,909	$ 1,080,075
Total Consolidated Long-lived Assets	427,913				463,042				427,913	463,042	492,745
Domestic Operations [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue									610,967	585,865	531,025
Total Consolidated Long-lived Assets	148,724				164,324				148,724	164,324	191,966
Dominica, St. Kitts and St. Maarten [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue									342,831	340,861	346,235
Total Consolidated Long-lived Assets	182,701				190,843				182,701	190,843	190,513
Brazil [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue									270,934	276,341	196,097
Total Consolidated Long-lived Assets	94,467				104,497				94,467	104,497	106,878
Other [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue									6,479	4,842	6,718
Total Consolidated Long-lived Assets	2,021				3,378				2,021	3,378	3,388
Total International [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue									620,244	622,044	549,050
Total Consolidated Long-lived Assets	$ 279,189				$ 298,718				$ 279,189	$ 298,718	$ 300,779