v3.25.4

Operating Leases (Tables) | 6 Months Ended
--- | ---
Dec. 31, 2025
Operating Leases |
Schedule of carrying value of right-of-use assets and operating lease liabilities | The carrying value of all right-of-use assets and operating lease liabilities is as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | June 30,
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2025
Right-of-use assets | ​ | $ | 1,064 | ​ | $ | 1,348
​ | ​ | ​ | ​ | ​ | ​ | ​
Operating lease liabilities: | ​ |  | ​ | ​ |  | ​
Current | ​ | $ | 666 | ​ | $ | 632
Long-term | ​ |  | 619 | ​ |  | 983
Total | ​ | $ | 1,285 | ​ | $ | 1,615
Schedule of operating lease expense | For the three and six months ended December 31, 2025 and 2024, operating lease expense is included under the following captions in the accompanying unaudited condensed consolidated statements of operations and comprehensive loss (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | December 31, | ​ | December 31,
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2024 | ​ | 2025 | ​ ​ ​ | 2024
Research and development | ​ | $ | 120 | ​ | $ | 119 | ​ | $ | 240 | ​ | $ | 238
General and administrative | ​ |  | 57 | ​ |  | 48 | ​ |  | 104 | ​ |  | 96
Total | ​ | $ | 177 | ​ | $ | 167 | ​ | $ | 344 | ​ | $ | 334
Schedule of future payments under operating lease agreements | Future cash payments under all operating lease agreements as of December 31, 2025 are as follows (in thousands): ​
​ | ​ | ​ | ​
Fiscal year ending June 30, | ​ ​ ​ | ​ | ​
Remainder of fiscal year 2026 | ​ | $ | 389
2027 | ​ | ​ | 750
2028 | ​ | ​ | 224
Total lease payments | ​ | ​ | 1,363
Less imputed interest | ​ |  | (78)
Present value of operating lease liabilities | ​ | $ | 1,285
​

X
- Definition The tabular disclosure of carrying value of ROU assets and operating lease liabilities. + References No definition available. + Details
Name: | rzlt_LesseeOperatingLeaseRightOfUseAssetsAndOperatingLeaseLiabilities
Namespace Prefix: | rzlt_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration