Business Combination, Contingent Consideration, Liability, Earnout Period, Stock Price Trigger

No definition available.

Name:	pct_BusinessCombinationContingentConsiderationLiabilityEarnoutPeriodStockPriceTrigger
Namespace Prefix:	pct_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Business Combination, Contingent Consideration, Liability, Earnout Period, Threshold Trading Day Period

+ References

No definition available.

+ Details

Name:	pct_BusinessCombinationContingentConsiderationLiabilityEarnoutPeriodThresholdTradingDayPeriod
Namespace Prefix:	pct_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Business Combination, Contingent Consideration, Liability, Earnout Period, Threshold Trading Days

+ References

No definition available.

+ Details

Name:	pct_BusinessCombinationContingentConsiderationLiabilityEarnoutPeriodThresholdTradingDays
Namespace Prefix:	pct_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Class Of warrant or right, exercised during the period.

+ References

No definition available.

+ Details

Name:	pct_ClassOfWarrantOrRightExercisedDuringThePeriod
Namespace Prefix:	pct_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Class of Warrant or Right, Redemption of Warrants or Rights, Written Notice of Redemption, Threshold

+ References

No definition available.

+ Details

Name:	pct_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsWrittenNoticeOfRedemptionThreshold
Namespace Prefix:	pct_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Class of Warrant or Right, Redemption Price of Warrants or Rights

+ References

No definition available.

+ Details

Name:	pct_ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights
Namespace Prefix:	pct_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Derivative Instrument, Contingent Consideration, Liability, Earnout Period, Business Days Prior to Notice of Redemption

+ References

No definition available.

+ Details

Name:	pct_DerivativeInstrumentContingentConsiderationLiabilityEarnoutPeriodBusinessDaysPriorToNoticeOfRedemption
Namespace Prefix:	pct_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Extended expiration date.

+ References

No definition available.

+ Details

Name:	pct_ExtendedExpirationDate
Namespace Prefix:	pct_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Supplemental warrant amendment effective date.

+ References

No definition available.

+ Details

Name:	pct_SupplementalWarrantAmendmentEffectiveDate
Namespace Prefix:	pct_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Warrants, redemption period, start date.

+ References

No definition available.

+ Details

Name:	pct_WarrantsRedemptionPeriodStartDate
Namespace Prefix:	pct_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Warrants transferred from initial purchasers.

+ References

No definition available.

+ Details

Name:	pct_WarrantsTransferredFromInitialPurchasers
Namespace Prefix:	pct_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Expiration date for purchase of share under share repurchase plan, in YYYY-MM-DD format. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

+ Details

Name:	srt_StockRepurchaseProgramExpirationDate
Namespace Prefix:	srt_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- 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

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

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromWarrantExercises
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478448/946-505-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(4)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in YYYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	instant

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=pct_RTIWarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=pct_SeriesAWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputOptionVolatilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=pct_SeriesBWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=pct_SeriesCWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=pct_PublicWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=pct_PrivateWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

WARRANTS - Additional Information (Details) $ / shares in Units, $ in Thousands						6 Months Ended		12 Months Ended
	Apr. 16, 2026 $ / shares	Feb. 20, 2026 Tradingday $ / shares	Jan. 16, 2025 USD ($) shares	Sep. 13, 2024 $ / shares shares	May 10, 2024 $ / shares shares	Jun. 30, 2026 USD ($) Tradingday $ / shares shares	Jun. 30, 2025 USD ($)	Dec. 31, 2025 $ / shares	Apr. 15, 2026 $ / shares	Feb. 19, 2026 $ / shares	Mar. 07, 2022 $ / shares shares	Mar. 17, 2021 $ / shares
Class of Warrant or Right [Line Items]
Proceeds from exercise of warrants \| $						$ 243	$ 5,400
RTI Warrants
Class of Warrant or Right [Line Items]
Proceeds from exercise of warrants \| $			$ 5,400
RTI Warrants \| Common Stock
Class of Warrant or Right [Line Items]
Shares issued (in shares) \| shares			1,500,000
Series A Warrants
Class of Warrant or Right [Line Items]
Warrants exercise price (in usd per share)						$ 11.5		$ 11.5			$ 11.5
Extended expiration date		Mar. 17, 2027
Earnout stock price trigger (in usd per share)		$ 14.38								$ 18
Earnout period, threshold trading days \| Tradingday		20
Earnout period, threshold trading day period \| Tradingday		30
Stock expiration date						Mar. 17, 2027		Mar. 17, 2027
Stock expiration date											Mar. 17, 2026
Class of warrant or right, number of securities called by warrants or rights (in shares) \| shares											17,900,000
Series A Warrants \| Expected volatility
Class of Warrant or Right [Line Items]
Warrant, measurement input						1
Series B Warrants
Class of Warrant or Right [Line Items]
Warrants exercise price (in usd per share)					$ 11.5	$ 11.5		$ 11.5
Warrants issued (in shares) \| shares					3,100,000
Stock expiration date					Dec. 01, 2030	Dec. 01, 2030		Dec. 01, 2030
Class of warrant or right, number of securities called by warrants or rights (in shares) \| shares					1
Warrants, redemption period, start date						Jan. 01, 2028
Series B Warrants \| Expected volatility
Class of Warrant or Right [Line Items]
Warrant, measurement input						1
Series C Warrants
Class of Warrant or Right [Line Items]
Shares issued (in shares) \| shares				5,000,000
Warrants exercise price (in usd per share)				$ 11.5		$ 11.5		$ 11.5
Stock expiration date				Dec. 01, 2030		Dec. 01, 2030		Dec. 01, 2030
Warrants, redemption period, start date						Jan. 01, 2029
Series C Warrants \| Expected volatility
Class of Warrant or Right [Line Items]
Warrant, measurement input						1
Public Warrants
Class of Warrant or Right [Line Items]
Proceeds from exercise of warrants \| $						$ 200
Warrants exercise price (in usd per share)												$ 11.5
Warrants redemption price (in usd per share)						$ 0.01
Extended expiration date	Mar. 17, 2027
Supplemental warrant amendment effective date	Jun. 17, 2026
Warrants written notice of redemption threshold						30 days
Earnout stock price trigger (in usd per share)	$ 14.38					$ 18			$ 18
Earnout period, threshold trading days \| Tradingday						20
Earnout period, threshold trading day period \| Tradingday						30
Earnout period, business days prior to notice of redemption						3 days
Warrants exercised \| shares						21,104
Private Warrants
Class of Warrant or Right [Line Items]
Warrants exercise price (in usd per share)						$ 11.5		$ 11.5				$ 11.5
Warrants redemption price (in usd per share)						$ 0.01
Extended expiration date	Mar. 17, 2027
Supplemental warrant amendment effective date	Jun. 17, 2026
Warrants written notice of redemption threshold						30 days
Earnout stock price trigger (in usd per share)	$ 14.38					$ 18			$ 18
Earnout period, threshold trading days \| Tradingday						20
Earnout period, threshold trading day period \| Tradingday						30
Earnout period, business days prior to notice of redemption						3 days
Warrants transferred from initial purchasers \| shares						187,000
Stock expiration date						Mar. 17, 2027		Mar. 17, 2027