CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 163,671	$ 142,799	$ 126,296
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	71,760	64,752	66,083
Amortization of deferred financing costs	4,484	3,234	2,639
Loss on extinguishment of debt			272
Loss on disposal of assets	1,025
Stock-based compensation expense	21,945	17,919	14,072
Deferred income tax expense	15,148	13,568	27,022
Equity in earnings of unconsolidated ventures	(167)	(204)	(874)
Gain on sale of assets	(1,545)
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	46,158	(105)	18,889
Prepaid expenses and other assets	(5,221)	(8,408)	(2,057)
Accounts payable and other accrued expenses	(46,825)	2,427	(21,484)
Accrued compensation and benefits	12,048	4,320	2,776
Income taxes payable and receivable	(9,954)	14,868	17
Deferred rent	(952)	(9,631)	(4,323)
Supplemental retirement savings plan obligations and other long-term liabilities	9,675	(2,962)	(2,466)
Net cash provided by operating activities	281,250	242,577	226,862
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(43,268)	(20,835)	(17,444)
Cash paid for business acquisitions, net of cash acquired	(7,276)	(587,821)	(14,972)
Proceeds from net working capital and other refunds of acquired business	19,287
Proceeds from equity method investments	4,681		391
Other	1,772	1,069	629
Net cash used in investing activities	(24,804)	(607,587)	(31,396)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities, net of financing costs	485,500	1,058,500	438,969
Principal payments made under bank credit facilities	(714,465)	(659,965)	(650,141)
Payment of financing costs under bank credit facilities		(9,290)	(2,279)
Proceeds from employee stock purchase plans	4,316	3,086	3,287
Proceeds from exercise of stock options			691
Repurchases of common stock	(4,386)	(3,230)	(3,400)
Payment of taxes for equity transactions	(10,951)	(8,045)	(7,378)
Other		451	(2,257)
Net cash (used in) provided by financing activities	(239,986)	381,507	(222,508)
Effect of exchange rate changes on cash and cash equivalents	(3)	(2,779)	(2,055)
Net increase (decrease) in cash and cash equivalents	16,457	13,718	(29,097)
Cash and cash equivalents, beginning of year	49,082	35,364	64,461
Cash and cash equivalents, end of year	65,539	49,082	35,364
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	79,268	54,970	45,068
Cash paid during the period for interest	45,015	37,429	33,491
Non-cash financing and investing activities:
Accrued capital expenditures	$ 667	$ 2,170	$ 1,349