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Note 2 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Property and equipment, gross |  | $ 81,227,000
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization, Total | $ 81,809,000 |
Accumulated depreciation | (48,815,000) | (55,383,000)
Net property and equipment | 32,994,000 | 25,844,000
Property and equipment, net | 32,994,000 | 25,844,000
Non-US [Member] |  |
Net property and equipment | 5,760,000 | 6,174,000
Property and equipment, net | 5,760,000 | 6,174,000
Medical Equipment and Facilities [Member] |  |
Property and equipment, gross | 78,688,000 | 77,150,000
Office Equipment [Member] |  |
Property and equipment, gross | 447,000 | 306,000
Construction in Progress [Member] |  |
Property and equipment, gross | $ 2,674,000 | $ 3,771,000

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