Defined Contribution and Deferred Compensation Plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan name			401(k) savings plan
Defined Contribution Plan, Tax Status [Extensible Enumeration]			us-gaap:QualifiedPlanMember
Silvercrest matching contributions towards benefit of employees	$ 26	$ 21	$ 53	$ 43
Maximum
Defined Contribution Plan Disclosure [Line Items]
Silvercrest matching contribution percentage			4.00%