XML 50 R39.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Lease (Details - Lease term and discount) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Lease |  |
Weighted average remaining lease term | 1.58 to 1.75 years | 2.08 to 2.25 years
Operating lease, weighted average discount rate | 10.00% | 10.00%

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

X
- References No definition available. + Details
Name: | FCUV_OperatingLeaseWeightedAverageRemainingLeaseTerm2
Namespace Prefix: | FCUV_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average discount rate for operating lease calculated at point in time. + 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 (g)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant