OTHER BALANCE SHEET CAPTIONS - Components of Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Components of Accrued Expenses [Abstract]
Employee benefit plans	$ 3,033	$ 590
Salaries and wages	12,607	3,189
Property taxes	1,461	1,445
Current operating lease liabilities	2,112	2,244
Other	1,539	1,915
Total	$ 20,752	$ 9,383

-- None. No documentation exists for this element. --

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 30
-Section 45
-Paragraph 1
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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- Definition

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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- Definition

Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided.

+ References

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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- Definition

Amount of expenses incurred but not yet paid classified as other.

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