EQUITY METHOD INVESTMENTS - Summary of Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Income from equity method investments	$ 4,618	$ 5,296
Distributions received from equity method investments	(3,856)	(3,856)
Manufacturing JV other-than-temporary impairment	(35,840)	0
Equity method investments	42,520	97,930
Manufacturing JV
Schedule of Equity Method Investments [Line Items]
Equity method investment, underlying equity in net assets	56,684	75,434
Manufacturing JV capital contribution
Schedule of Equity Method Investments [Line Items]
Equity method investment, underlying equity in net assets	10,714	10,714
HK JV and China JV
Schedule of Equity Method Investments [Line Items]
Equity method investment, underlying equity in net assets	$ 10,200	$ 10,342

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- Definition

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

+ References

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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