Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES:
Net income	$ 65,858	$ 48,208
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	20,972	18,185
Stock-based compensation expense	14,823	16,081
Allowances for doubtful accounts	1,544	3,110
Provision for excess and obsolete inventories	18,093	24,585
Share of loss from equity investee	1,066	3,572
Foreign currency exchange (gain) loss	311	(292)
Deferred income taxes, net	(4,436)	(9,751)
Other	1,105	923
Changes in operating assets and liabilities:
Accounts receivable (including changes in related party balances of $1,612 and ($8,813) during the nine months ended March 31, 2020 and 2019, respectively)	58,935	155,232
Inventories	(214,131)	36,750
Prepaid expenses and other assets (including changes in related party balances of ($52) and $9,741 during the nine months ended March 31, 2020 and 2019, respectively)	(34,790)	26,392
Accounts payable (including changes in related party balances of ($4,685) and ($24,882) during the nine months ended March 31, 2020 and 2019, respectively)	103,880	(201,624)
Income taxes payable	(11,042)	1,538
Deferred revenue	2,063	49,710
Accrued liabilities (including changes in related party balances of $9,734 and ($9,288) during the nine months ended March 31, 2020 and 2019, respectively)	49,924	9,706
Other long-term liabilities (including changes in related party balances of ($129) and $0 during the nine months ended March 31, 2020 and 2019, respectively)	(8,459)	(1,625)
Net cash provided by operating activities	65,716	180,700
INVESTING ACTIVITIES:
Purchases of property, plant and equipment (including payments to related parties of $4,384 and $4,203 during the nine months ended March 31, 2020 and 2019, respectively)	(34,886)	(15,781)
Proceeds from sale of investment in a privately-held company	750	0
Net cash used in investing activities	(34,136)	(15,781)
FINANCING ACTIVITIES:
Proceeds from debt	10,000	41,760
Repayment of debt	0	(67,700)
Net repayment on asset-backed revolving line of credit	(1,116)	(67,099)
Payment of other fees for debt financing	0	(375)
Proceeds from exercise of stock options	23,053	0
Payment of withholding tax on vesting of restricted stock units	(6,434)	(2,323)
Payments of obligations under finance leases	(122)	(206)
Net cash provided by (used in) financing activities	25,381	(95,943)
Effect of exchange rate fluctuations on cash	163	(88)
Net increase in cash, cash equivalents and restricted cash	57,124	68,888
Cash, cash equivalents and restricted cash at the beginning of the period	262,140	120,382
Cash, cash equivalents and restricted cash at the end of the period	319,264	189,270
Supplemental disclosure of cash flow information:
Cash paid for interest	1,651	3,402
Cash paid for taxes, net of refunds	42,516	21,657
Non-cash investing and financing activities:
Unpaid property, plant and equipment purchases (including due to related parties of $215 and $1,067 as of March 31, 2020 and 2019, respectively)	12,609	9,039
Contribution of certain technology rights to equity investee	$ 0	$ 3,000