Number of warrants or rights exercised.

No definition available.

Name:	rzlt_ClassOfWarrantOrRightExercised
Namespace Prefix:	rzlt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Period for increase decrease of ownership percentage in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	rzlt_MinimumPeriodForIncreaseOrDecreaseInOwnershipPercentage
Namespace Prefix:	rzlt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of warrants designated by holder.

+ References

No definition available.

+ Details

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Namespace Prefix:	rzlt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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

Name:	us-gaap_ClassOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

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

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ 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 (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

+ Details

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

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=rzlt_PreFundedWarrants2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
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SHAREHOLDERS' EQUITY - Pre-Funded Warrants (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	6 Months Ended
	Oct. 15, 2021	Oct. 31, 2021	Dec. 31, 2022	Jun. 30, 2022
Class of Stock [Line Items]
Warrant price (per share)			$ 22.60	$ 22.83
2021 Pre-Funded Warrants.
Class of Stock [Line Items]
Warrant price (per share)	$ 0.01		$ 0.01
Proceeds from warrants issued	$ 10.8	$ 10.8
Minimum Period For Increase Or Decrease In Ownership Percentage			61 days
Warrants exercised			0
2021 Pre-Funded Warrants. \| Maximum
Class of Stock [Line Items]
Warrants Designated Percentage Elected By Holder			19.99%
2021 Pre-Funded Warrants. \| Minimum
Class of Stock [Line Items]
Warrants Designated Percentage Elected By Holder			4.99%