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Summary of Significant Accounting Policies (Licensed Technology) (Details) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Years of amortization period of licensed technology, lower limit | 2 years
Years of amortization period of licensed technology, upper limit | 5 years

X
- Definition Capitalized licensed technology assets are stated at cost and are amortized on a straight-line basis over the term of the license or the estimated life of the assets, which is generally three to five years. + References No definition available. + Details
Name: | pxlw_YearsOfAmortizationPeriodOfLicensedTechnologyLowerLimit
Namespace Prefix: | pxlw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Capitalized licensed technology assets are stated at cost and are amortized on a straight-line basis over the term of the license or the estimated life of the assets, which is generally three to five years. + References No definition available. + Details
Name: | pxlw_YearsOfAmortizationPeriodOfLicensedTechnologyUpperLimit
Namespace Prefix: | pxlw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration