Business Segment Information - Summarized Financial Information of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Revenue from external customers	$ 1,073,280	$ 822,442
Net income	36,663	34,632
Domestic
Segment Reporting Information [Line Items]
Revenue from external customers	1,038,891	785,678
Net income	33,642	31,935
International
Segment Reporting Information [Line Items]
Revenue from external customers	34,389	36,764
Net income	$ 3,021	$ 2,697