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Revenue - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 7,330	$ 5,680	$ 20,760	$ 15,899
Transferred over Time
Disaggregation of Revenue [Line Items]
Revenue	$ 7,300	5,600	20,200	15,600
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenue		$ 100	$ 600	$ 300

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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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No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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