CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenues	$ 1,490,898	$ 1,459,506
Costs of revenues:
Direct costs	974,171	939,934
Indirect costs and selling expenses	357,106	355,004
Depreciation and amortization	32,592	30,144
Total costs of revenues	1,363,869	1,325,082
Income from operations	127,029	134,424
Interest expense and other, net	10,398	9,980
Income before income taxes	116,631	124,444
Income taxes	28,522	30,800
Net income	$ 88,109	$ 93,644
Basic earnings per share	$ 3.74	$ 3.73
Diluted earnings per share	$ 3.70	$ 3.67
Weighted-average basic shares outstanding	23,560	25,099
Weighted-average diluted shares outstanding	23,844	25,486