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Major Customers and International Sales - Additional Information (Detail) - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sales | Customer One
Segment Reporting Information [Line Items]
Concentration risk, percentage	18.00%	12.00%	13.00%
Sales | Customer Two
Segment Reporting Information [Line Items]
Concentration risk, percentage	14.00%	9.00%	10.00%
Sales | Customer Three
Segment Reporting Information [Line Items]
Concentration risk, percentage	7.00%	8.00%	10.00%
Receivables | Customer One
Segment Reporting Information [Line Items]
Concentration risk, percentage	13.00%	8.00%
Receivables | Customer Two
Segment Reporting Information [Line Items]
Concentration risk, percentage	12.00%	7.00%
Receivables | Customer Three
Segment Reporting Information [Line Items]
Concentration risk, percentage	6.00%	5.00%

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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