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INCOME TAXES - Deferred tax (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Deferred tax liabilities: |  |
Property, plant and equipment | $ (38,710) | $ (2,169)
Deferred tax liabilities | (38,710) | (2,169)
Deferred tax assets: |  |
Federal loss carryovers and credits | 933 | 1,328
Other | 764 | 808
Total deferred tax assets | 1,697 | 2,136
Less valuation allowance | (318) | (317)
Net deferred tax assets | 1,379 | 1,819
Overall net deferred tax liabilities | $ (37,331) | $ (350)

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