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Note 2 - Property and Equipment | 3 Months Ended
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Mar. 31, 2025
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | Note 2. Property and Equipment Property and equipment are stated at cost less accumulated depreciation. Depreciation for Gamma Knife equipment, LINAC units and other equipment is determined using the straight-line method over the estimated useful lives of the assets, which for medical and office equipment is generally between three and ten years, and after accounting for salvage value on the equipment where indicated. The Company determines salvage value based on the estimated fair value of the equipment at the end of its useful life. The Company determines salvage value based on the estimated fair value of the equipment at the end of its useful life. As of December 31, 2024, the Company reduced its estimate of salvage value for all remaining domestic Gamma Knife units to $0. The net effect of the change in estimate, for the three-month period ended March 31, 2025, was a decrease in net income of approximately $83,000 or $0.01 per diluted share. This change in estimate will be $10,000, or $0.00 per share in future periods, following the expiration of one customer contract. Depreciation for PBRT equipment is determined using the modified units of production method, which is a function of both time and usage of the equipment. This depreciation method allocates costs considering the projected volume of usage through the useful life of the PBRT unit, which has been estimated at 20 years. The estimated useful life of the PBRT unit is consistent with the estimated economic life of 20 years. The following table summarizes property and equipment as of March 31, 2025 and December 31, 2024:
|  | March 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Medical equipment and facilities |  | $ | 74,182,000 |  |  | $ | 71,148,000 |
Office equipment |  |  | 604,000 |  |  |  | 594,000 |
Construction in progress |  |  | 1,833,000 |  |  |  | 1,112,000 |
|  |  | 76,619,000 |  |  |  | 72,854,000 |
Accumulated depreciation |  |  | (43,178,000 | ) |  |  | (41,729,000 | )
Net property and equipment |  | $ | 33,441,000 |  |  | $ | 31,125,000 |
Net property and equipment held outside of the United States |  | $ | 7,115,000 |  |  | $ | 6,104,000 |
Depreciation expense recorded in costs of revenue and selling and administrative expense in the condensed consolidated statements of operations for the three-month periods ended March 31, 2025 and 2024 is as follows:
|  | Three Months Ended March 31, |
|  | 2025 |  |  | 2024 |
Depreciation expense |  | $ | 1,449,000 |  |  | $ | 1,334,000 |

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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