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v3.25.1

Reconciliations of Reportable Segment Assets and Other Significant Items (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Total assets for reportable segments | $ 3,274 | $ 4,216 |
Cash held in corporate headquarters | 33,856 | 37,040 |
Marketable securities - noncurrent | 5,441 | 5,777 |
Elimination of receivables from corporate headquarters | (605) | (601) |
Other unallocated amounts | 392 | 65 |
TOTAL ASSETS | 42,358 | 46,497 |
Revenues from external customers | 2,969 | 4,292 | $ 5,585
Interest income | 1,963 | 1,811 | 718
Depreciation and amortization | (58) | (55) | (33)
Segment Totals |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Revenues from external customers | 2,969 | 4,292 | 5,585
Interest income | 7 | 8 | 2
Interest expense | (37) | (38) | (63)
Depreciation and amortization | (58) | (55) | (33)
Adjustments |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Interest income | 1,956 | 1,803 | 716
Interest expense | $ 37 | $ 38 | $ 63

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