Investment in Unconsolidated Joint Venture (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Aug. 31, 2019
Schedule of Equity Method Investments [Line Items]
Contribution made to the JV	$ 3,020	$ 768
Investment income (loss) from unconsolidated joint venture under the equity method of accounting	127	(178)
Investment in joint venture	$ 3,736	$ 589
Hi-Power
Schedule of Equity Method Investments [Line Items]
Initial estimated financial commitment			$ 4,100
Initial ownership interest			49.00%
Percentage of earning from equity method investment			5.00%

Equity Method Investment, Initial Financial Commitment

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Equity Method Investments, Revenue Arrangement, Percentage of Product Price

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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