Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
OPERATING ACTIVITIES:
Net income	$ 26,601	$ 26,345
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	7,517	6,826
Stock-based compensation expense	7,170	5,054
Allowances for (recovery of) doubtful accounts	(154)	56
Provision for (recovery of) excess and obsolete inventories	(902)	8,328
Share of income from equity investee	(1,330)	(1,011)
Foreign currency exchange (gain) loss	618	(561)
Deferred income taxes, net	(224)	(585)
Other	(719)	289
Changes in operating assets and liabilities:
Accounts receivable (including changes in related party balances of $7,510 and $(4,474) during the three months ended September 30, 2020 and 2019, respectively)	81,035	37,340
Inventories	78,544	(23,371)
Prepaid expenses and other assets (including changes in related party balances of $12,083 and $(3,554) during the three months ended September 30, 2020 and 2019, respectively)	43,724	(31,088)
Accounts payable (including changes in related party balances of $(24,676) and $3,796 during the three months ended September 30, 2020 and 2019, respectively)	(85,704)	(24,865)
Income taxes payable	1,625	(9,215)
Deferred revenue	(1,946)	(1,529)
Accrued liabilities (including changes in related party balances of $(3,577) and $5,324 during the three months ended September 30, 2020 and 2019, respectively)	(36,457)	12,693
Other long-term liabilities (including changes in related party balances of $(530) and $1,272 during the three months ended September 30, 2020 and 2019, respectively)	1,157	854
Net cash provided by operating activities	120,555	5,560
INVESTING ACTIVITIES:
Purchases of property, plant and equipment (including payments to related parties of $2,230 and $813 during the three months ended September 30, 2020 and 2019, respectively)	(11,851)	(13,325)
Net cash used in investing activities	(11,851)	(13,325)
FINANCING ACTIVITIES:
Proceeds from debt	6,408	0
Repayment of debt	(271)	0
Net repayment on asset-backed revolving line of credit	0	(1,116)
Proceeds from exercise of stock options	5,020	0
Payment of withholding tax on vesting of restricted stock units	(2,005)	(580)
Stock repurchases	(28,453)	0
Payments of obligations under finance leases	(26)	(19)
Net cash used in financing activities	(19,327)	(1,715)
Effect of exchange rate fluctuations on cash	185	(38)
Net increase (decrease) in cash, cash equivalents and restricted cash	89,562	(9,518)
Cash, cash equivalents and restricted cash at the beginning of the period	212,390	262,140
Cash, cash equivalents and restricted cash at the end of the period	301,952	252,622
Supplemental disclosure of cash flow information:
Cash paid for interest	512	777
Cash paid for taxes, net of refunds	1,204	30,800
Non-cash investing and financing activities:
Unpaid property, plant and equipment purchases (including due to related parties of $1,664 and $1,514 as of September 30, 2020 and 2019, respectively)	6,661	6,413
New operating lease assets obtained in exchange for operating lease liabilities	2,059	0
Stock Repurchased, Not Paid	$ 1,547	$ 0