Segment Information (Revenues and Long-Lived Assets by Geographic Area) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Total Consolidated Revenue	$ 280,654	$ 271,487	$ 832,006	$ 792,272
Total Consolidated Long-lived Assets	455,357	474,975	455,357	474,975
Operating Segments [Member] | Domestic Operations [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue	184,105	169,736	533,661	482,182
Total Consolidated Long-lived Assets	284,416	282,890	284,416	282,890
Operating Segments [Member] | Barbados, St. Kitts, and St. Maarten
Segment Reporting Information [Line Items]
Total Consolidated Revenue	83,900	92,259	261,380	277,934
Total Consolidated Long-lived Assets	170,025	190,374	170,025	190,374
Operating Segments [Member] | Other International Operations [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue	12,649	9,492	36,965	32,156
Total Consolidated Long-lived Assets	916	1,711	916	1,711
Operating Segments [Member] | International Operations [Member]
Segment Reporting Information [Line Items]
Total Consolidated Revenue	96,549	101,751	298,345	310,090
Total Consolidated Long-lived Assets	$ 170,941	$ 192,085	$ 170,941	$ 192,085