Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES:
Net income	$ 13,532	$ 13,699
Reconciliation of net income to net cash provided by (used in) operating activities:
Depreciation and amortization	3,802	2,753
Stock-based compensation expense	4,504	3,876
Excess tax benefits from stock-based compensation	(302)	(134)
Allowance for doubtful accounts	73	98
Provision for inventory	3,893	1,718
Exchange loss (gain)	698	(2,007)
Deferred income taxes	(1,182)	(2,221)
Changes in operating assets and liabilities:
Accounts receivable, net (including changes in related party balances of $(2,573) and $1,212 during the three months ended September 30, 2016 and 2015, respectively)	(39,399)	25,418
Inventory	(54,900)	404
Prepaid expenses and other assets	465	(1,247)
Accounts payable (including changes in related party balances of $(862) and $(3,129) during the three months ended September 30, 2016 and 2015, respectively)	43,362	(37,652)
Income taxes payable, net	5,314	2,966
Accrued liabilities	4,992	3,686
Other long-term liabilities	4,105	8,949
Net cash provided by (used in) operating activities	(11,043)	20,306
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(11,646)	(7,662)
Change in restricted cash	116	(3)
Net cash used in investing activities	(11,530)	(7,665)
FINANCING ACTIVITIES:
Proceeds from debt, net of debt issuance costs	73,916	4,700
Repayment of debt	(70,033)	(2,900)
Payment to acquire treasury stock	(18,461)	0
Proceeds from exercise of stock options	2,939	951
Excess tax benefits from stock-based compensation	302	134
Minimum tax withholding paid on behalf of employees for restricted stock units	(660)	(196)
Payment of obligations under capital leases	(56)	(39)
Advances (payments) under receivable financing arrangements	19	(37)
Net cash provided by (used in) financing activities	(12,034)	2,613
Effect of exchange rate fluctuations on cash	339	198
Net increase (decrease) in cash and cash equivalents	(34,268)	15,452
Cash and cash equivalents at beginning of period	180,964	95,442
Cash and cash equivalents at end of period	146,696	110,894
Supplemental disclosure of cash flow information:
Cash paid for interest	316	298
Cash paid for taxes, net of refunds	1,212	5,736
Non-cash investing and financing activities:
Equipment purchased under capital leases	0	42
Accrued costs for property, plant and equipment purchases	$ 4,070	$ 5,735