Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
OPERATING ACTIVITIES:
Net income	$ 52,194	$ 65,050
Reconciliation of net income to net cash provided by (used in) operating activities:
Depreciation and amortization	11,768	9,538
Stock-based compensation expense	14,046	11,768
Excess tax benefits from stock-based compensation	(1,893)	(2,506)
Allowance for doubtful accounts	611	1,014
Provision for inventory	8,162	6,026
Exchange loss (gain)	1,331	(1,492)
Deferred income taxes	(6,998)	(2,657)
Changes in operating assets and liabilities:
Accounts receivable, net (including changes in related party balances of $(2,936) and $7,152 during the nine months ended March 31, 2017 and 2016, respectively)	(103,004)	35,875
Inventory	(201,496)	(21,809)
Prepaid expenses and other assets	1,800	(3,756)
Accounts payable (including changes in related party balances of $11,255 and $(13,658) during the nine months ended March 31, 2017 and 2016, respectively)	103,767	(23,176)
Income taxes payable, net	1,511	(8,583)
Accrued liabilities	13,564	5,701
Other long-term liabilities	14,365	21,833
Net cash provided by (used in) operating activities	(90,272)	92,826
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(23,270)	(25,120)
Change in restricted cash	(286)	(1,018)
Net cash used in investing activities	(23,556)	(26,138)
FINANCING ACTIVITIES:
Proceeds from debt, net of debt issuance costs	170,416	24,100
Repayment of debt	(119,852)	(23,700)
Payment to acquire treasury stock	(18,461)	0
Proceeds from exercise of stock options	9,123	10,661
Excess tax benefits from stock-based compensation	1,893	2,506
Minimum tax withholding paid on behalf of employees for restricted stock units	(2,476)	(1,108)
Payment of obligations under capital leases	(184)	(133)
Advances under receivable financing arrangements	4	835
Net cash provided by financing activities	40,463	13,161
Effect of exchange rate fluctuations on cash	180	1,115
Net increase (decrease) in cash and cash equivalents	(73,185)	80,964
Cash and cash equivalents at beginning of period	180,964	95,442
Cash and cash equivalents at end of period	107,779	176,406
Supplemental disclosure of cash flow information:
Cash paid for interest	1,335	1,136
Cash paid for taxes, net of refunds	24,958	34,562
Non-cash investing and financing activities:
Equipment purchased under capital leases	314	299
Accrued costs for property, plant and equipment purchases	$ 4,833	$ 7,316