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Major Customers and International Sales - Additional Information (Detail) - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Sales | Customer One
Segment Reporting Information [Line Items]
Concentration risk, percentage	17.00%	18.00%	12.00%
Sales | Customer Two
Segment Reporting Information [Line Items]
Concentration risk, percentage	12.00%	14.00%	9.00%
Sales | Customer Three
Segment Reporting Information [Line Items]
Concentration risk, percentage	10.00%	7.00%	8.00%
Receivables | Customer One
Segment Reporting Information [Line Items]
Concentration risk, percentage	8.00%	13.00%
Receivables | Customer Two
Segment Reporting Information [Line Items]
Concentration risk, percentage	4.00%	12.00%
Receivables | Customer Three
Segment Reporting Information [Line Items]
Concentration risk, percentage	3.00%	6.00%

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
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- Definition

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.

+ References

No definition available.

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