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Contractual Obligation, Payment

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Length of Economic Benefit To Capitalize Internal Use Software Development Costs

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Length of Product Warranty

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Significant Accounting Policies [Line Items]

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Simple Annual Interest Rate to Noncontrolling Interest if Joint Venture is Early Terminated and Liquidated

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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The Company and Significant Accounting Policies (Details) ¥ in Millions		12 Months Ended			30 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 CNY (¥)	Jun. 30, 2019 CNY (¥)	Jan. 10, 2017 USD ($)	Jan. 10, 2017 CNY (¥)
Significant Accounting Policies [Line Items]
Restricted cash - long-term	$ 2,038,000	$ 2,038,000	$ 0		$ 2,038,000
Impairment of long-lived assets		$ 0	0	$ 0
Length of product warranty		1 year
Advertising expense		$ 600,000	$ 400,000	$ 400,000
Equipment and tooling [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Office furntiture and equipment [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Land use rights [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		50 years
Internally developed software [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Minimum
Significant Accounting Policies [Line Items]
Length of economic benefit to capitalize internal use software development costs		1 year
Minimum \| Building [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		20 years
Minimum \| Manufacturing machinery and equipment [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Minimum \| Computer equipment and software [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		3 years
Minimum \| Leasehold improvements [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		2 years
Maximum \| Building [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		30 years
Maximum \| Manufacturing machinery and equipment [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		15 years
Maximum \| Computer equipment and software [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Maximum \| Leasehold improvements [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		20 years
Software Development [Member] \| Minimum
Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life		3 years
Software Development [Member] \| Maximum
Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life		5 years
Supplier Concentration Risk [Member] \| Cost of Goods and Service, Product and Service Benchmark [Member]
Significant Accounting Policies [Line Items]
Percent of wafers manufactured		14.10%	15.40%	18.60%
Facility in Liangjiang New Area of Chongqing (the 'Joint Venture')
Significant Accounting Policies [Line Items]
Simple Annual Interest Rate to Noncontrolling Interest if Joint Venture is Early Terminated and Liquidated	10.00%
Parent Company \| Facility in Liangjiang New Area of Chongqing (the 'Joint Venture')
Significant Accounting Policies [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	51.00%
Chongqing Funds \| Facility in Liangjiang New Area of Chongqing (the 'Joint Venture')
Significant Accounting Policies [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	49.00%
Corporate Joint Venture
Significant Accounting Policies [Line Items]
Contractual Obligation								$ 78,000,000	¥ 540.0
Contractual Obligation, Payment					69,900,000	¥ 480.0
Contractual Obligation Future Minimum Payments Due in Fiscal Year 2020	$ 8,700,000	$ 8,700,000			$ 8,700,000		¥ 60.0
Design Fees [Member] \| Corporate Joint Venture
Significant Accounting Policies [Line Items]
Contractual Obligation								2,800,000
Construction and Procurement Fees \| Corporate Joint Venture
Significant Accounting Policies [Line Items]
Contractual Obligation								$ 75,200,000