v3.26.1
Segment Reporting - Schedule of Income Statements by Segment, Significant Segment Expenses, and Segment Assets (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]              
Revenue $ 1,319,000   $ 1,634,000   $ 2,766,000 $ 3,154,000  
Cost of services 612,000   756,000   1,293,000 1,418,000  
Selling, general and administrative expenses 2,746,000   2,215,000   5,586,000 3,208,000  
Research and development 1,180,000   0   4,669,000 0  
Depreciation and amortization expense 25,000   30,000   50,000 59,000  
Loss from operations (3,244,000)   (1,367,000)   (8,832,000) (1,531,000)  
Gain on insurance settlement 27,000   0   27,000 0  
Net loss before income taxes (3,036,000)   (1,363,000)   (8,452,000) (1,528,000)  
Income tax (benefit) expense  0   0   0 1,000  
Net loss (3,036,000) $ (5,416,000) (1,363,000) $ (166,000) (8,452,000) (1,529,000)  
Accounts receivable, net 465,000       465,000   $ 439,000
Contract assets 527,000       527,000   275,000
Other current assets 573,000       573,000   672,000
Property, plant and equipment, net 194,000       194,000   128,000
Intangible assets, net 33,000       33,000   73,000
Finance lease right-of-use assets 9,000       9,000   11,000
Operating lease right-of-use assets 209,000       209,000   269,000
Other non-current assets 79,000       79,000   140,000
Goodwill 182,000       182,000   182,000
Operating Segments              
Segment Reporting [Line Items]              
Revenue 1,319,000   1,634,000   2,766,000 3,154,000  
Cost of services 612,000   756,000   1,293,000 1,418,000  
Selling, general and administrative expenses 2,746,000   2,215,000   5,586,000 3,208,000  
Research and development 1,180,000   0   4,669,000 0  
Depreciation and amortization expense 25,000   30,000   50,000 59,000  
Loss from operations (3,244,000)   (1,367,000)   (8,832,000) (1,531,000)  
Gain on insurance settlement 27,000       27,000 0  
Other income/(expense), net 181,000   4,000   353,000 3,000  
Net loss before income taxes (3,036,000)   (1,363,000)   (8,452,000) (1,528,000)  
Income tax (benefit) expense  0   0   0 1,000  
Net loss (3,036,000)   (1,363,000)   (8,452,000) (1,529,000)  
Cash and cash equivalents 19,379,000       19,379,000   27,434,000
Accounts receivable, net 465,000       465,000   439,000
Contract assets 527,000       527,000   275,000
Other current assets 573,000       573,000   672,000
Property, plant and equipment, net 194,000       194,000   128,000
Intangible assets, net 33,000       33,000   73,000
Finance lease right-of-use assets 9,000       9,000   11,000
Operating lease right-of-use assets 209,000       209,000   269,000
Other non-current assets             140,000
Goodwill 182,000       182,000   182,000
Operating Segments | Deep Isolation US & EMEA              
Segment Reporting [Line Items]              
Revenue 490,000   740,000   1,054,000 1,424,000  
Cost of services 338,000   309,000   707,000 667,000  
Selling, general and administrative expenses 2,391,000   1,889,000   4,860,000 2,491,000  
Research and development 1,180,000   0   4,669,000 0  
Depreciation and amortization expense (10,000)   1,000   0 1,000  
Loss from operations (3,409,000)   (1,459,000)   (9,182,000) (1,735,000)  
Gain on insurance settlement 0       0 0  
Other income/(expense), net 179,000   3,000   345,000 3,000  
Net loss before income taxes (3,230,000)   (1,456,000)   (8,837,000) (1,732,000)  
Income tax (benefit) expense  0   0   0 1,000  
Net loss (3,230,000)   (1,456,000)   (8,837,000) (1,733,000)  
Cash and cash equivalents 17,857,000       17,857,000   25,926,000
Accounts receivable, net 70,000       70,000   140,000
Contract assets 322,000       322,000   44,000
Other current assets 543,000       543,000   641,000
Property, plant and equipment, net 131,000       131,000   66,000
Intangible assets, net 0       0   0
Finance lease right-of-use assets 0       0   0
Operating lease right-of-use assets 0       0   0
Other non-current assets             140,000
Goodwill 0       0   0
Operating Segments | Freestone              
Segment Reporting [Line Items]              
Revenue 829,000   894,000   1,712,000 1,730,000  
Cost of services 274,000   447,000   586,000 751,000  
Selling, general and administrative expenses 355,000   326,000   726,000 717,000  
Research and development 0   0   0 0  
Depreciation and amortization expense 35,000   29,000   50,000 58,000  
Loss from operations 165,000   92,000   350,000 204,000  
Gain on insurance settlement 27,000       27,000 0  
Other income/(expense), net 2,000   1,000   8,000 0  
Net loss before income taxes 194,000   93,000   385,000 204,000  
Income tax (benefit) expense  0   0   0 0  
Net loss 194,000   $ 93,000   385,000 $ 204,000  
Cash and cash equivalents 1,522,000       1,522,000   1,508,000
Accounts receivable, net 395,000       395,000   299,000
Contract assets 205,000       205,000   231,000
Other current assets 30,000       30,000   31,000
Property, plant and equipment, net 63,000       63,000   62,000
Intangible assets, net 33,000       33,000   73,000
Finance lease right-of-use assets 9,000       9,000   11,000
Operating lease right-of-use assets 209,000       209,000   269,000
Other non-current assets             0
Goodwill $ 182,000       $ 182,000   $ 182,000