LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 42	$ 71
Operating cash flows from finance leases	1,553	1,309
Financing cash flows from finance leases	11,366	5,888	$ 11,366
ROU assets obtained in exchange for lease liabilities:
Operating leases		$ 170
Finance leases	$ 8,481

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Amount of interest paid on finance lease liability.

+ References

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Amount of cash outflow for principal payment on finance lease.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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Right-of-Use Asset Obtained [Abstract]

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