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Business Segment and Geographic Reporting (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Business Segment and Geographic Reporting (Details) [Line Items]
Number of operating segment	1
Total revenues	$ 38,767	$ 10,507
Production Customer [Member]
Business Segment and Geographic Reporting (Details) [Line Items]
Total revenues	6,400	0
OEM [Member]
Business Segment and Geographic Reporting (Details) [Line Items]
Total revenues	$ 6,900	$ 6,100
One External Customer [Member] | Sales Revenue, Net [Member]
Business Segment and Geographic Reporting (Details) [Line Items]
Number of customers	2
Customer Concentration Risk [Member] | One External Customer [Member] | Sales Revenue, Net [Member]
Business Segment and Geographic Reporting (Details) [Line Items]
Concentration risk, percentage	10.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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