Balance Sheet Components - Short-Term Line of Credit (Narrative) (Details) $ in Thousands	Dec. 14, 2020 USD ($)
Balance Sheet Related Disclosures [Abstract]
Maximum borrowing capacity	$ 10,000
Line of credit facility, component of calculation for maximum borrowing amount under formula advances	$ 2,500
Line of credit facility maximum borrowing capacity limited by eligible AR	80.00%
Line of credit facility, maximum borrowing capacity under non-formula advances	$ 10,000

Maximum amount available to borrow under revolving line of credit is limited by the lesser of $10 million or $1 million plus 80% of eligible domestic accounts receivable and certain foreign accounts receivable.

No definition available.

+ Details

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Namespace Prefix:	pxlw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

+ References

No definition available.

+ Details

Name:	pxlw_LineOfCreditFacilityMaximumBorrowingCapacityLimitedByEligibleAr
Namespace Prefix:	pxlw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit facility, maximum borrowing capacity under non-formula advances which may be made solely during the last five busines days of any fiscal month or quarter and which must be repaid by the Company on or before the fifth business day after the applicable fiscal month or quarter end.

+ References

No definition available.

+ Details

Name:	pxlw_LineOfCreditFacilityMaximumBorrowingCapacityUnderNonFormulaAdvances
Namespace Prefix:	pxlw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_BalanceSheetRelatedDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant