Investments - Equity Method Investments Results of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investment, Summarized Financial Information, Income Statement
Net sales	$ 0	$ 91,234	$ 354,964
Gross profit	0	18,261	74,399
Net income	0	1,752	6,870
Adjustment for profit (loss) in inventory	0	(138)	204
Net income attributable to Company	$ 0	$ 738	$ 3,639

Equity Method Investment, Adjustment for Profit in Inventory

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The amount of gross profit (loss) reported by an equity method investment of the entity.

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The amount of net income (loss) reported by an equity method investment of the entity.

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The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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