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6-COMMITMENTS AND CONTINGENCIES - Legal proceedings (Details)	9 Months Ended
	Dec. 31, 2015 lawsuit item customer patent
Legal proceedings
Number of lawsuits | lawsuit	2
Cypress Semiconductor Litigation
Legal proceedings
Number of patents infringed	5
Cypress Semiconductor International Trade Commission
Legal proceedings
Number of patents infringed	3
Number of additional patent infringement complaints	1
Number of distributors | item	3
Number of customers who infringed patents | customer	11
Number of terminated or dismissed patent claims	1
Cypress Semiconductor Northern District Litigation
Legal proceedings
Number of terminated or dismissed patent claims	3
Number of patent claims transferred	2

X

- Definition

Represents the number of additional patent infringement charges alleged in complaint.

+ References

No definition available.

+ Details

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- Definition

Represents the number of customers who infringed patents.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsit_
Data Type:	xbrli:integerItemType
Balance Type:	na
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X

- Definition

Represents the number of distributors alleged to have infringed patents.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsit_
Data Type:	xbrli:integerItemType
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- Definition

Represents the number of lawsuits

+ References

No definition available.

+ Details

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Namespace Prefix:	gsit_
Data Type:	xbrli:integerItemType
Balance Type:	na
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X

- Definition

Represents the number of patents claims transferred.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsit_
Data Type:	xbrli:integerItemType
Balance Type:	na
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X

- Definition

Represents the number of patent infringement claims dismissed or terminated.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsit_
Data Type:	xbrli:integerItemType
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X

- Definition

Represents the number of patents infringed.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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X

- Details

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