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Concentrations - Additional Information (Detail)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020 Entity Agency Distributor	Sep. 30, 2019 Agency Distributor	Sep. 30, 2020 Entity Agency Distributor	Sep. 30, 2019 Agency Distributor	Dec. 31, 2019
Concentration Risk [Line Items]
Number of financial institutions | Entity	2		2
Number of distribution partners that were paid revenue | Distributor	0	0	0	0
Minimum
Concentration Risk [Line Items]
Percentage of revenue as criteria for major distribution partners	10.00%	10.00%	10.00%	10.00%
Revenue | Customer Concentration Risk
Concentration Risk [Line Items]
Number of advertising agencies | Agency	1	1	1	1
Revenue | Customer Concentration Risk | Maximum
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	10.00%	15.00%	10.00%
Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage			31.00%		37.00%

X

- Definition

Number of advertising agencies.

+ References

No definition available.

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- Definition

The number of financial institutions.

+ References

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- Definition

Number of distribution partners.

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- Definition

Percentage of revenue as criteria for major distribution partners.

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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

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- 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

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