The amount for notes payable (written promise to pay), due to related parties.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.17)
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k)(1))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

+ Details

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

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

- Definition

Price per share or per unit of warrants or rights outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	xpax_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum advisory services fee payable to related party Maximum Advisory Services Fee Percentage, Calculated On The Cash Underwriting Discount Paid, Net Of Expenses Yes Percent Instant Maximum advisory services fee percentage calculated on the cash underwriting discount paid to underwriters, net of expenses.

+ References

No definition available.

+ Details

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Namespace Prefix:	xpax_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of maximum borrowing capacity of related party promissory note.

+ References

No definition available.

+ Details

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

- Definition

The maximum amount which a potential loan could have repaid through issuance of warrants.

+ References

No definition available.

+ Details

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

- Definition

The contractual monthly amount to be paid for support services.

+ References

No definition available.

+ Details

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

- Details

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RELATED PARTY TRANSACTIONS - Additional Information (Details) - USD ($)	4 Months Ended
	Jun. 30, 2021	Mar. 31, 2021
Related Party Transaction [Line Items]
Proceeds from Related Party Debt	$ 84,412
Working capital loans warrant
Related Party Transaction [Line Items]
Outstanding balance of related party note	0	$ 0
Promissory Note with Related Party
Related Party Transaction [Line Items]
Maximum borrowing capacity of related party promissory note	300,000
Administrative Support Agreement
Related Party Transaction [Line Items]
Expenses per month	10,000
Related Party Loans
Related Party Transaction [Line Items]
Loan conversion agreement warrant	$ 1,500,000
Related Party Loans \| Working capital loans warrant
Related Party Transaction [Line Items]
Price of warrant	$ 1.50
Advisory Services Agreement
Related Party Transaction [Line Items]
Maximum advisory services fee payable to related party	35.00%