Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 33,153	$ 69,246	$ 63,619
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	37,495	24,968	17,154
Amortization of debt issue costs	326	290	297
Provision for doubtful accounts	7,075	8,901	7,571
Share-based compensation	6,459	6,602	7,093
Deferred income taxes	(22,286)	(1,861)	1,846
Excess tax benefits from share-based payment arrangements	0	(89)	(101)
Change in fair value of contingent consideration	37,043	5,211	1,294
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(46,766)	(66,129)	14,167
Inventories	(59,498)	28,449	2,999
Prepaid expenses and other assets	(6,366)	(4,300)	4,612
Other noncurrent assets	(6,361)	(9,540)	(2,186)
Accounts payable	44,464	19,861	(71,706)
Accrued expenses and other liabilities	(11,540)	8,491	6,401
Income taxes payable	14,673	4,776	(849)
Net cash provided by operating activities	27,871	94,876	52,211
Cash flows from investing activities:
Capital expenditures	(8,159)	(8,849)	(12,081)
Cash paid for business acquisitions, net of cash acquired	(143,768)	(83,804)	(61,475)
Payments for acquisition of intangible assets	0	(3,583)	0
Net cash used in investing activities	(151,927)	(96,236)	(73,556)
Cash flows from financing activities:
Borrowings on revolving credit, net of expenses	2,301,443	1,813,062	1,376,620
Repayments on revolving credit, net of expenses	(2,149,659)	(1,792,620)	(1,305,193)
Repayments on long-term debt	0	0	(2,792)
Repayments of capital lease obligations	(591)	(246)	(223)
Debt issuance costs	(296)	(876)	0
Contingent consideration payments	(54,025)	(10,241)	(8,606)
Exercise of stock options	2,273	9,969	5,542
Taxes paid on settlement of equity awards	(1,637)	(1,761)	(1,548)
Repurchase of common stock	0	(20,882)	(100,206)
Excess tax benefits from share-based payment arrangements	0	89	101
Net cash provided by (used in) financing activities	97,508	(3,506)	(36,305)
Effect of exchange rate changes on cash and cash equivalents	(4,016)	(440)	(2,596)
Decrease in cash and cash equivalents	(30,564)	(5,306)	(60,246)
Cash and cash equivalents at beginning of period	56,094	61,400	121,646
Cash and cash equivalents at end of period	25,530	56,094	61,400
Supplemental disclosure of cash flow information:
Interest paid during the year	8,544	2,831	1,706
Income taxes paid during the year	$ 38,330	$ 31,126	$ 33,859