Subsidiaries - Details of Global-Tech's Subsidiaries (Detail)	12 Months Ended
	Mar. 31, 2014
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	20.00%
Global Display Holdings Limited [Member] | British Virgin Islands [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Investment holding
Kwong Lee Shun Trading Company Limited [Member] | Hong Kong [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Leasing of a property
Consortium Investment (BVI) Limited [Member] | British Virgin Islands [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Investment holding
GT Investments (BVI) Limited [Member] | British Virgin Islands [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Investment holding
Global Optics Limited [Member] | Hong Kong [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Trading of raw materials and electronic and optical components
Dongguan Wing Shing Electrical Products Factory Company Limited ("DWS") [Member] | Mainland China [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Factory complex rental and maintenance
Guangdong Lite Array Company Limited [Member] | Mainland China [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Developing, manufacturing and marketing of electronic and optical components
Dongguan Microview Medical Technology Company Limited [Member] | Mainland China [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Manufacturing and distribution of medical instruments
Joke Media Limited [Member] | Mainland China [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Media services
Global Household Products Limited [Member] | Hong Kong [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Inactive
Pentalpha Medical Limited [Member] | Hong Kong [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Inactive
Pentalpha Hong Kong Limited [Member] | Hong Kong [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Inactive
Global-Tech USA, Inc. [Member] | United States [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	100.00%
Principal activities	Provision of consultation services
Global Lite Array (BVI) Limited [Member] | British Virgin Islands [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	76.75%
Principal activities	Investment holding
Lite Array, Inc. [Member] | United States [Member]
Subsidiary or Equity Method Investee [Line Items]
Percentage of equity interest attributable to the Company	76.75%
Principal activities	Inactive