Inventories

The following table shows the components of inventory (in thousands):

Prepaid expenses and other current assets

The following table shows the components of prepaid expenses and other current assets (in thousands):

Accrued expenses and other current liabilities

The following table shows the components of accrued expenses and other current liabilities (in thousands):


	March 31, 2026		December 31, 2025
Accrued expenses:
Accrued compensation and related benefits	$	4,604	$	5,662
Accrued insurance		386		616
Accrued professional services		308		210
Accrued inventory and property, plant, and equipment purchases		198		1,014
Accrued interest		415		493
Accrued property taxes		296		86
Accrued monitoring fees		534		504
Other		232		991
Other current liabilities:
Income tax payable	$	906	$	—
Sales tax payable		344		276
Unbilled lost-in-hole revenue		56		137
Deferred income		840		722
Total accrued expenses and other current liabilities	$	9,119	$	10,711

NOTE 4 – BALANCE SHEET DETAILS - CURRENT ASSETS AND CURRENT LIABILITIES