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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Publisher FASB
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Segment Information - Customers Accounted for 10% or More of Revenue (Detail) - Customer Concentration Risk [Member] - Sales [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Central Banks [Member]
Revenue, Major Customer [Line Items]
Entity wide revenue major customers percentage	47.00%	61.00%	47.00%	59.00%
Walmart Inc. [Member]
Revenue, Major Customer [Line Items]
Entity wide revenue major customers percentage		13.00%		12.00%