Significant Accounting Policies - Performance Obligations (Details) $ in Thousands	3 Months Ended
Mar. 31, 2023 USD ($)
Significant Accounting Policies
Contracts with an original expected length	true
Remainder of 2023	$ 29,649
2024	31,922
2025	26,870
2026	1,516
2027	617
2028 and thereafter	8
Total	$ 90,582

No definition available.

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

- Definition

Indicates (true false) whether optional exemption was applied not to disclose amount of transaction price allocated to and explanation of expected timing of revenue recognition for remaining performance obligation, when contract has expected duration of one year or less or right to consideration corresponds directly to performance completed.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130558-203045

+ Details

Name:	us-gaap_RevenuePracticalExpedientRemainingPerformanceObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045

+ Details

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

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue, due after fourth fiscal year following latest fiscal year.

+ References

No definition available.

+ Details

Name:	xela_RevenueRemainingPerformanceObligationAmountDueAfterYearFour
Namespace Prefix:	xela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue, due in the twelve months following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	xela_RevenueRemainingPerformanceObligationAmountDueInNextTwelveMonths
Namespace Prefix:	xela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue, due in fourth fiscal year following latest fiscal year.

+ References

No definition available.

+ Details

Name:	xela_RevenueRemainingPerformanceObligationAmountDueYearFour
Namespace Prefix:	xela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue, due in third fiscal year following latest fiscal year.

+ References

No definition available.

+ Details

Name:	xela_RevenueRemainingPerformanceObligationAmountDueYearThree
Namespace Prefix:	xela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue, due in second fiscal year following latest fiscal year.

+ References

No definition available.

+ Details

Name:	xela_RevenueRemainingPerformanceObligationAmountDueYearTwo
Namespace Prefix:	xela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue, due in remainder of fiscal year following latest fiscal year ended.

+ References

No definition available.

+ Details

Name:	xela_RevenueRemainingPerformanceObligationAmountRemainderOfFiscalYear
Namespace Prefix:	xela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant