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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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Summary of Significant Accounting and Reporting Policies and Recent Developments - Additional Information (Detail) - $ / shares	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020	Jun. 11, 2020
Concentration Risk [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Three Insurance Partners \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	63.00%	65.00%
Top Insurance Partner \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage		63.00%
One Customer \| Accounts Receivable \| Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage		13.00%	19.00%