CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenues	$ 2,056,889	$ 1,850,147
Costs of revenues:
Direct costs	1,414,424	1,272,918
Indirect costs and selling expenses	427,946	404,633
Depreciation and amortization	34,678	35,247
Total costs of revenues	1,877,048	1,712,798
Income from operations	179,841	137,349
Interest expense and other, net	23,970	25,571
Income before income taxes	155,871	111,778
Income taxes	35,694	25,731
Net income	$ 120,177	$ 86,047
Basic earnings per share (in dollars per share)	$ 5.39	$ 3.80
Diluted earnings per share (in dollars per share)	$ 5.33	$ 3.76
Weighted-average basic shares outstanding (in shares)	22,304	22,647
Weighted-average diluted shares outstanding (in shares)	22,539	22,894