CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 36,663	$ 34,632
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	18,063	14,811
Amortization of deferred financing costs	1,128	577
Loss on disposal of fixed assets	727
Stock-based compensation expense	4,897	3,638
Deferred income tax expense	11,846	7,885
Equity in earnings of unconsolidated ventures	(103)	49
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	63,292	48,190
Prepaid expenses and other assets	(13,012)	(10,869)
Accounts payable and other accrued expenses	(41,642)	(9,945)
Accrued compensation and benefits	(11,418)	(6,949)
Income taxes payable and receivable	(14,421)	(785)
Supplemental retirement savings plan obligations and other long-term liabilities	1,757	(1,931)
Net cash provided by operating activities	57,777	79,303
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(11,235)	(4,479)
Cash paid for business acquisitions, net of cash acquired	(2,921)	(2,767)
Proceeds from net working capital refund of acquired business	13,619
Proceeds from equity method investments	4,681
Other	481	(765)
Net cash provided by (used in) investing activities	4,625	(8,011)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities	164,000	82,500
Principal payments made under bank credit facilities	(222,491)	(157,241)
Proceeds from employee stock purchase plans	1,182	801
Repurchases of common stock	(1,085)	(794)
Payment of taxes for equity transactions	(2,848)	(2,340)
Other		4
Net cash used in financing activities	(61,242)	(77,070)
Effect of exchange rate changes on cash and cash equivalents	(574)	(587)
Net increase (decrease) in cash and cash equivalents	586	(6,365)
Cash and cash equivalents, beginning of period	49,082	35,364
Cash and cash equivalents, end of year	49,668	28,999
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	23,054	13,285
Cash paid during the period for interest	11,524	8,379
Non-cash financing and investing activities:
Accrued capital expenditures	$ 1,434	$ 122