The following table summarizes the components of our inventory, net of allowance for obsolescence, as of the dates presented: | | | | | | | | | | | | | June 30, | | December 31, | | 2026 | | 2025 | Parts and supplies, net of allowance of $2,552 for each period, respectively | $ | 28,336 | | | $ | 20,104 | | | Work-in-process | 774 | | | 543 | | | Inventory - current | 29,110 | | | 20,647 | | Parts and supplies - long term, net of allowance of $1,020 for each period, respectively | — | | | — | | | Total inventory | $ | 29,110 | | | $ | 20,647 | |
The following table summarizes the changes in our allowance for obsolescence for the periods presented: | | | | | | | | | | | | | June 30, | | December 31, | | 2026 | | 2025 | | Beginning balance | $ | 3,572 | | | $ | 5,867 | | | Allowance for obsolescence | — | | | 1,114 | | | Write-offs | — | | | (3,409) | | | Ending balance | $ | 3,572 | | | $ | 3,572 | |
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