v3.26.1
Note 2 - Summary of Significant Accounting Policies - Segment Reporting (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Revenues $ 1,019   $ 212   $ 1,451 $ 355
Total cost of revenues 921   14   963 25
Acquired in-process research and development 0   1,848   0 1,967
Stock-based compensation expense 266   98   330 189
Interest income (4)   (3)   (6) (21)
Change in fair value of royalties payable due to related parties 0   (1,667)   0 (2,830)
Change in fair value of trading debt securities 0   10   0 10
Change in fair value of minority equity interest 0   0   (2,302) 0
Change in fair value of deferred consideration 318   0   3,195 0
Loss on debt extinguishment (105)   0   (105) 0
Income tax benefit (312)   (950)   (487) (1,674)
Segment and consolidated net loss (3,306) $ (1,690) (5,458) $ (4,045) (4,996) (9,503)
Net loss (3,306) $ (1,690) (5,458) $ (4,045) (4,996) (9,503)
Product [Member]            
Revenues 270   212   518 355
Total cost of revenues 22   14   53 25
Service [Member]            
Revenues 749   0   933 0
Total cost of revenues 899   0   910 0
Cardiac Electrophysiology [Member]            
Segment and consolidated net loss (2,319)       (3,877)  
Net loss (2,319)       (3,877)  
Private Aviation [Member]            
Segment and consolidated net loss (987)       (1,119)  
Net loss (987)       (1,119)  
Operating Segments [Member]            
Revenues 1,019   212   1,451 355
Total cost of revenues 921   14   963 25
Acquired in-process research and development 0   1,848   0 1,967
Depreciation and amortization expense 382   529   786 1,060
Stock-based compensation expense 266   98   330 189
Salaries and benefits expense 929   1,310   1,744 2,624
Professional fees 1,148   317   1,804 1,044
Research and development expense 142   155   291 258
Interest income (4)   (3)   (6) (21)
Interest expense 204   67   323 116
Change in fair value of royalties payable due to related parties 0   1,667   0 2,830
Change in fair value of trading debt securities 0   (10)   0 (10)
Change in fair value of minority equity interest 0   0   2,302 0
Change in fair value of deferred consideration (318)   0   (3,195) 0
Loss on debt extinguishment 105   0   105 0
Unrealized gains and losses, net (378)   0   (378) 0
Income tax benefit (312)   (950)   (487) (1,674)
Other segment items (1) [1] 1,240   628   1,865 1,450
Operating Segments [Member] | Product [Member]            
Revenues 270   212   518 355
Total cost of revenues 22   14   53 25
Operating Segments [Member] | Product [Member] | VIVO [Member]            
Revenues 54   71   127 86
Operating Segments [Member] | Product [Member] | LockeT [Member]            
Revenues 216   141   391 269
Operating Segments [Member] | Service [Member]            
Revenues 749   0   933 0
Total cost of revenues 899   0   910 0
Operating Segments [Member] | Service [Member] | Luxe [Member]            
Revenues 27   0   69 0
Operating Segments [Member] | Service [Member] | Hops [Member]            
Revenues 722   $ 0   864 $ 0
Operating Segments [Member] | Cardiac Electrophysiology [Member]            
Revenues 270       518  
Total cost of revenues 22       53  
Acquired in-process research and development 0       0  
Depreciation and amortization expense 367       734  
Stock-based compensation expense 266       330  
Salaries and benefits expense 647       1,457  
Professional fees 1,127       1,641  
Research and development expense 142       291  
Interest income (4)       (6)  
Interest expense 174       277  
Change in fair value of royalties payable due to related parties 0       0  
Change in fair value of trading debt securities 0       0  
Change in fair value of minority equity interest 0       2,302  
Change in fair value of deferred consideration (318)       (3,195)  
Loss on debt extinguishment 105       105  
Unrealized gains and losses, net (378)       (378)  
Income tax benefit (312)       (487)  
Other segment items (1) [1] 751       1,271  
Operating Segments [Member] | Cardiac Electrophysiology [Member] | Product [Member]            
Revenues 270       518  
Total cost of revenues 22       53  
Operating Segments [Member] | Cardiac Electrophysiology [Member] | Product [Member] | VIVO [Member]            
Revenues 54       127  
Operating Segments [Member] | Cardiac Electrophysiology [Member] | Product [Member] | LockeT [Member]            
Revenues 216       391  
Operating Segments [Member] | Cardiac Electrophysiology [Member] | Service [Member]            
Revenues 0       0  
Total cost of revenues 0       0  
Operating Segments [Member] | Cardiac Electrophysiology [Member] | Service [Member] | Luxe [Member]            
Revenues 0       0  
Operating Segments [Member] | Cardiac Electrophysiology [Member] | Service [Member] | Hops [Member]            
Revenues 0       0  
Operating Segments [Member] | Private Aviation [Member]            
Revenues 749       933  
Total cost of revenues 899       910  
Acquired in-process research and development 0       0  
Depreciation and amortization expense 15       52  
Stock-based compensation expense 0       0  
Salaries and benefits expense 282       287  
Professional fees 21       163  
Research and development expense 0       0  
Interest income 0       0  
Interest expense 30       46  
Change in fair value of royalties payable due to related parties 0       0  
Change in fair value of trading debt securities 0       0  
Change in fair value of minority equity interest 0       0  
Change in fair value of deferred consideration 0       0  
Loss on debt extinguishment 0       0  
Unrealized gains and losses, net 0       0  
Income tax benefit 0       0  
Other segment items (1) [1] 489       594  
Operating Segments [Member] | Private Aviation [Member] | Product [Member]            
Revenues 0       0  
Total cost of revenues 0       0  
Operating Segments [Member] | Private Aviation [Member] | Product [Member] | VIVO [Member]            
Revenues 0       0  
Operating Segments [Member] | Private Aviation [Member] | Product [Member] | LockeT [Member]            
Revenues 0       0  
Operating Segments [Member] | Private Aviation [Member] | Service [Member]            
Revenues 749       933  
Total cost of revenues 899       910  
Operating Segments [Member] | Private Aviation [Member] | Service [Member] | Luxe [Member]            
Revenues 27       69  
Operating Segments [Member] | Private Aviation [Member] | Service [Member] | Hops [Member]            
Revenues $ 722       $ 864  
[1] Other segment items include other income (expense), net, consulting fees, investor relations and SEC fees, insurance fees, and other selling, general, and administrative expenses. Other selling, general, and administrative expenses primarily consist of travel expenses, computer and information technology expenses, and rent expenses.