Revenue Recognition under ASC 606 (Narrative) (Details) - USD ($)	3 Months Ended
Jul. 31, 2019	Apr. 30, 2021	Apr. 30, 2020
Deferred Revenue, Revenue Recognized	$ 1,095,424
Revenue recognition, anticipated benefit period	3 years 6 months
Capitalized Contract Cost, cost capitalized during period	$ 79,045
Capitalized Contract Cost, Amortization	70,815
Capitalized Contract Cost	$ 202,634
Subsequent Event [Member]
Remaining Performance Obligations		$ 307,573	$ 2,700,249

Capitalized Contract Cost, cost capitalized during period

No definition available.

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Period Type:	duration

- Definition

Revenue recognition, anticipated benefit period

+ References

No definition available.

+ Details

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Namespace Prefix:	cpah_
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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

+ Details

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

- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

+ Details

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

- Definition

Amount of revenue recognized that was previously reported as deferred or unearned revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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 http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045

+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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