Amount of liability recognized arising from contingent consideration in a business combination.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

Name:	us-gaap_BusinessCombinationContingentConsiderationLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Intangible Assets, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Finite Lived Intangible Assets [Line Items]
Intangible assets, net	$ 15,105	$ 10,636
Amortization of intangible assets expected beginning date	Jun. 01, 2022
Commission percentage on aggregate replacement premium	6.00%
Contingent consideration payable	$ 1,069		$ 2,419
Renewal rights commission prepaid up-front	3,800
Other Liabilities [Member]
Finite Lived Intangible Assets [Line Items]
Contingent liability	1,069
Renewal Rights and Non-compete Agreement [Member] \| United [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, net	$ 4,869