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Note 11 - Leases (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Oct. 31, 2020 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Nov. 29, 2019
Lessee, Operating Lease, Liability, to be Paid |  | $ 2,367 |  | $ 2,367 |  |
Operating Lease, Liability |  | 2,119 |  | 2,119 |  |
Sublease Income |  | 56 | $ 56 | 112 | $ 112 |
Company Offices in Israel [Member] |  |  |  |  |  |
Lessee, Operating Lease, Liability, to be Paid |  | 600 |  | 600 |  |
Lease Agreement for Office in Los Angeles, California [Member] | UroGen Pharma Inc. [Member] |  |  |  |  |  |
Operating Lease, Impairment Loss | $ 200 |  |  |  |  |
Operating Lease, Liability |  | 200 |  | 200 |  |
Sublease Income |  |  |  | 200 |  |
Lease Agreement for Office in Princeton, New Jersey [Member] | UroGen Pharma Inc. [Member] |  |  |  |  |  |
Operating Lease, Liability |  | $ 1,500 |  | $ 1,500 |  |
Lessee, Operating Lease, Term of Contract (Month) |  |  |  |  |  | 38 months

X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479365/842-20-25-6 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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- Definition Amount of sublease income excluding finance and operating lease expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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