THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2022

THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Schedule of Fair Value Measurements on Recurring and Non-recurring basis

	December 31, 2022
(thousands of dollars)	Level 1		Level 2		Level 3		Total
Current assets
Cash equivalent:
Money market account	$	68,676	$	—	$	—	$	68,676
Total current assets recorded at fair value	$	68,676	$	—	$	—	$	68,676

	December 31, 2021
(thousands of dollars)	Level 1		Level 2		Level 3		Total
Current assets
Cash equivalent:
Money market account	$	109,883	$	—	$	—	$	109,883
Total current assets recorded at fair value	$	109,883	$	—	$	—	$	109,883

	December 31, 2021
(thousands of dollars)	Level 1		Level 2		Level 3		Total
Non-current Assets
Land grant	$	—	$	—	$	1,378	$	1,378
Total non-current assets recorded at fair value	$	—	$	—	$	1,378	$	1,378
Non-current Liabilities
Land grant obligation	$	—	$	—	$	(1,378)	$	(1,378)
Total non-current liabilities recorded at fair value	$	—	$	—	$	(1,378)	$	(1,378)