Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Accrued Liabilities, Current
Preferred stock dividends payable	$ 2,901		$ 2,901
Payable in connection with construction in progress	1,481		7,249
Accrued compensation and related charges	1,135		3,707
Accrued professional services	947		868
Accrued income taxes	654
Other tax payable	564		493
Current portion of operating lease liabilities	488		458
Accrued product warranty	392	$ 421	703	$ 876	$ 852	$ 669
Advances from customers	367		305
Other personnel-related costs	336		286
Accrual for sales returns	45		39
Other accrued liabilities	2,631		2,010
Accrued liabilities, Total	$ 11,941		$ 19,019