Leases and Contingencies - Additional Information (Detail)		1 Months Ended	6 Months Ended	12 Months Ended
	Oct. 26, 2017 USD ($) ft²	Apr. 30, 2021 USD ($) ft²	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Lessee Lease Description [Line Items]
Operating lease assets (right -of-use assets)			$ 21,520,000	$ 23,339,000
Operating lease liabilities			25,529,000
Charges, claims related to litigation			$ 0	$ 0
Minimum [Member]
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term			1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term			5 years
Third Amendment Newton Lease [Member]
Lessee Lease Description [Line Items]
Lease extension date	Dec. 31, 2029
Operating lease term option to extend	5 years
Amendment effective date	Jan. 01, 2018
Base monthly rent	$ 300,000
Percentage increase in base rent	1.00%
Third Amendment Newton Lease [Member] | Minimum [Member]
Lessee Lease Description [Line Items]
Lease agreement for office | ft²	74,000
Third Amendment Newton Lease [Member] | Maximum [Member]
Lessee Lease Description [Line Items]
Lease agreement for office | ft²	110,000
Fourth Amendment [Member]
Lessee Lease Description [Line Items]
One-time cash allowance		$ 600,000
Base monthly rent		$ 300
Amendment effective month and year		2021-05
Fourth Amendment [Member] | Minimum [Member]
Lessee Lease Description [Line Items]
Lease agreement for office | ft²		68,000
Fourth Amendment [Member] | Maximum [Member]
Lessee Lease Description [Line Items]
Lease agreement for office | ft²		74,000