Number of basis points decrease in royalty rate.

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Number of basis points increase in discount rate.

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Percentage of reduction of fair value of trademarks by decrease in royalty rate.

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Percentage of reduction of fair value of trademarks by increase in discount rate.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Weighted average interest rate of debt outstanding.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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Amount of transactions with related party during the financial reporting period.

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SIGNIFICANT ACCOUNTING POLICIES - Invest, VEBA, NP (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
VEBA trust
Contribution by entity to VEBA trust		$ 0	$ 0	$ 0	$ 20,024
Cash and cash equivalents held by VEBA trust	$ 105,840	$ 105,840	$ 166,841
Bank loans
Weighted interest rate (as a percent)	3.10%	3.10%	3.00%
Goodwill and indefinite-lived intangible assets:
Impairments of intangibles		$ 0	$ 0	$ 0
Trademarks
Goodwill and indefinite-lived intangible assets:
Number of basis points increase in discount rate	100.00%
Number of basis points decrease in royalty rate	100.00%
Percentage of reduction of fair value due to increase in discount rate	16.00%
Percentage of reduction of fair value due to decrease in royalty rate	10.00%
VEBA Trust \| Level 1
VEBA trust
Cash and cash equivalents held by VEBA trust	$ 3,941	$ 3,941	$ 8,272