Supplies Inventories (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Inventory Disclosure [Abstract]
Supplies inventories	$ 1,445,000		$ 1,445,000		$ 1,834,000
Write-down of supplies inventories – Note 4	$ (366,000)	$ 0	$ (378,000)	$ 0