Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION - Immaterial Corrections Related to Prior Periods (Details)

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ORGANIZATION - Immaterial Corrections Related to Prior Periods (Details) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Jun. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Decrease in interest expense $ (1,843,000)     $ (642,000)   $ (5,722,000) $ (1,827,000)  
Increase in cash paid for construction of plan           88,153,000 2,423,000  
Decrease in cash used in operating activities           $ 41,958,000 $ 10,784,000  
Revision of Prior Period, Error Correction, Adjustment                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Increase in property, plant and equipment, net   $ 4,200,000 $ 4,100,000   $ 8,300,000     $ 3,800,000
Decrease in interest expense   $ 4,200,000 4,100,000   8,300,000     3,800,000
Increase in cash paid for construction of plan     0   11,100,000     0
Decrease in cash used in operating activities     $ 0   $ 11,100,000     $ 0