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Note 6 - Leases | 12 Months Ended
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Dec. 31, 2022
Notes to Financial Statements |
Lessee, Operating Leases [Text Block] | NOTE 6 - LEASES The Company determines if a contract is a lease at inception. Under ASC 842, the Company is a lessor of equipment to various customers. Leases that commenced prior to ASC 842 adoption date were classified as operating leases under historical guidance. As the Company has elected the package of practical expedients allowing it to not reassess lease classification, these leases are classified as operating leases under ASC 842 as well. All of the Company’s lessor arrangements entered into after ASC 842 adoption are also classified as operating leases. Some of these lease terms have an option to extend the lease after the initial term, but do not contain the option to terminate early or purchase the asset at the end of the term. The Company has elected not to recognize ROU assets and lease liabilities that arise from short-term (12 months or less) leases for any class of underlying asset. The Company’s Gamma Knife and PBRT contracts with hospitals are classified as operating leases under ASC 842. The related equipment is included in medical equipment and facilities on the Company’s consolidated balance sheets (see further discussion at Note 2). As all income from the Company’s lessor arrangements is solely based on procedure volume, all income is considered variable payments not dependent on an index or a rate. As such, the Company does not measure future operating lease receivables. On November 3, 2021, the Company entered into an agreement to sublease (the “Sublease”) its corporate office located at Two Embarcadero Center, Suite 410, San Francisco, California, where it leases approximately 3,253 square feet for $22,011 per month with a lease expiration date in August 2023. The Sublease is for $16,195 per month through the existing contract expiration date. The Company also entered into a lease (the “Lease”) agreement for new corporate office space at 601 Montgomery, Suite 1112, San Francisco, CA for approximately 900 square feet for $4,500 per month with a lease expiration date in November 2024. The Company assessed the Lease under ASC 842 and concluded the Lease should be classified as an operating lease. The Company recorded $151,000 right-of-use (“ROU”) asset, other current liabilities and lease liabilities on the consolidated balance sheets related to the Lease as of December 1, 2021, the effective date of the Lease. The Company assessed the Sublease under ASC 842 and ASC 360 Property and Equipment (“ASC 360”) and concluded the ROU asset for the corporate offices at Two Embarcadero Center was impaired. The Company recorded an impairment loss on the Sublease of $77,000 as of December 1, 2021. The Company’s lessee operating leases are accounted for as ROU assets, other current liabilities, and lease liabilities on the consolidated balance sheets. Operating lease ROU assets and liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. The Company’s operating lease contracts do not provide an implicit rate for calculating the present value of future lease payments, so the Company determined its incremental borrowing rate to be in the range of approximately 4.0% and 6.0% by using available market rates and expected lease terms. The operating lease ROU assets and liabilities also include any lease payments made and excludes lease incentives and initial direct costs incurred. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The Company’s lessee operating lease agreements are for administrative office space and related equipment, and the agreement to lease clinic space for its stand-alone facility in Lima, Peru. These leases have remaining lease terms between 1 and 2 years, some of which include options to renew or extend the lease. As of December 31, 2022, operating ROU assets, net of impairment, were $317,000 and lease liabilities were $351,000. The following table summarizes maturities of lessee operating lease liabilities as of December 31, 2022:
Year ending December 31, |  | Operating Leases |
2023 |  | $ | 301,000 |
2024 |  |  | 59,000 |
Total lease payments |  |  | 360,000 |
Less imputed interest |  |  | (9,000 | )
Total |  | $ | 351,000 |
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |
Lease cost |  |  |  |  |  |  |  |
Operating lease cost, net of impairment |  | $ | 406,000 |  |  | $ | 351,000 |
Sublease income |  |  | (174,000 | ) |  |  | (14,000 | )
Total lease cost |  | $ | 232,000 |  |  | $ | 337,000 |
Other information |  |  |  |  |  |  |  |
Cash paid for amounts included in the measurement of lease liabilities - Operating leases |  | $ | 406,000 |  |  | $ | 351,000 |
Weighted-average remaining lease term - Operating leases in years |  |  | 1.11 |  |  |  | 1.39 |
Weighted-average discount rate - Operating leases |  |  | 5.65 | % |  |  | 5.80 | %
The Company’s corporate offices are located at 601 Montgomery Street, Suite 1112, San Francisco, California, where it leases approximately 900 square feet for $4,500 per month with a lease expiration date in November 2024. The Company subleased its existing corporate offices located at Two Embarcadero Center, Suite 410, San Francisco, California, where it leases approximately 3,253 square feet for $22,011 per month with a lease expiration date in August 2023. The monthly lease expense is offset by sublease income of $16,195. The sublease term is consistent with the existing lease term. The Company owns and operates a stand-alone Gamma Knife facility in Lima, Peru where it leases approximately 1,600 square feet for approximately $8,850 per month with a lease expiration date in January 2024. The Company also owns and operates a stand-alone Gamma Knife facility in Guayaquil, Ecuador where it owns 864 square feet of condominium space in an office building and approximately 10,135 of related land and parking spaces. Net rent expense was $290,000 and $377,000 for the years ended December 31, 2022 and 2021, respectively, and includes the above operating leases as well as month-to-month rental and certain executory costs. The sublease of the Company’s existing office space through the remainder of its lease term at a rate lower than its lease rate resulted in an impairment loss of $77,000 for the year ended December 31, 2021.

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI https://asc.fasb.org/subtopic&trid=77888251 + Details
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