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Research and Development (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Research and Development [Abstract]
Amount receivable as of date of development agreement		$ 4,000
Amounts payable upon completion of milestones		2,000
Research And Development Benefit Recognized	$ 2,275	$ 2,689

X

- Definition

Amounts receivable upon signing of co-development agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	pxlw_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

X

- Definition

Amounts payable upon completion of certain development milestones for development agreements entered into.

+ References

No definition available.

+ Details

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Namespace Prefix:	pxlw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Offset to research and development expense under development agreements.

+ References

No definition available.

+ Details

Name:	pxlw_ResearchAndDevelopmentBenefitRecognized
Namespace Prefix:	pxlw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_ResearchAndDevelopmentAbstract
Namespace Prefix:	us-gaap_
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Period Type:	duration