Commitments and Contingencies - Additional Information (Detail)

v3.22.4

Commitments and Contingencies - Additional Information (Detail) - USD ($)														1 Months Ended											12 Months Ended
	Dec. 05, 2022	Nov. 14, 2022	Oct. 01, 2022	Sep. 01, 2022	May 01, 2022	Jul. 01, 2021	Aug. 20, 2020	Jun. 01, 2020	May 01, 2020	Jun. 06, 2019	Apr. 12, 2019	Dec. 13, 2018	Jan. 16, 2018	Oct. 31, 2021	Feb. 28, 2021	Aug. 31, 2019	Jul. 31, 2019	Mar. 31, 2019	Jan. 31, 2018	Sep. 30, 2016	Jan. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2014	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Commitments And Contingencies [Line Items]
Operating lease rent expense																									$ 6,429,000	$ 6,454,000	$ 6,382,000
Sub-lease income																									154,000	154,000	154,000
Operating lease rent expense, net																									6,275,000	6,300,000
Finance lease obligation																									344,000	253,000
Assets acquired under capital leases																									342,000	247,000
Depreciation expense																									1,191,000	1,175,000	1,117,000
Leased assets write off																									194,000	120,000
Accumulated depreciation																									143,000	95,000
Two Copiers | Lease Agreement July 31, 2022
Commitments And Contingencies [Line Items]
Lease expiration date																Jul. 31, 2022
Assets acquired under capital leases																$ 51,000
Capital lease, period																3 years
Capital lease, minimum monthly payment																$ 1,000
Copier | Through May 31, 2022
Commitments And Contingencies [Line Items]
Lease expiration date																		May 31, 2022
Assets acquired under capital leases																		$ 12,000
Capital lease, period																		39 months
Capital lease, minimum monthly payment																		$ 400
Copier | Through February 28,2021
Commitments And Contingencies [Line Items]
Lease expiration date															Jan. 31, 2021
Assets acquired under capital leases															$ 11,000
Capital lease, period															3 years
Capital lease, minimum monthly payment															$ 300
Copier | Through February 28, 2022
Commitments And Contingencies [Line Items]
Lease expiration date																		Feb. 28, 2022
Assets acquired under capital leases																		$ 13,000
Capital lease, period																		3 years
Capital lease, minimum monthly payment																		$ 400
Finance Lease Assets
Commitments And Contingencies [Line Items]
Depreciation expense																									116,000	119,000	118,000
Cortina Asset Management, LLC | Copier | Lease Agreement November 2021
Commitments And Contingencies [Line Items]
Lease expiration date																	Nov. 30, 2021
Capital lease, minimum monthly payment																	$ 1,000
Additional Office Space
Commitments And Contingencies [Line Items]
Operating lease rent expense, net																				$ 10,000				$ 5,000
Refundable security deposit																								$ 3,000
Lease commencement date													Jan. 16, 2018							Oct. 01, 2017				May 01, 2014
Lease expiration date													Nov. 30, 2028							Nov. 30, 2024				Jul. 31, 2019
Number of rent free periods																								3 months
Rent credit																				$ 40,000
Lease expansion date													Jan. 12, 2018
Office Space | Charlottesville, VA.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net																							$ 2,000
Refundable security deposit																							$ 2,000
Lease commencement date										Jul. 01, 2019													Jun. 30, 2015
Lease expiration date										Jun. 30, 2022													Jun. 30, 2019
Lease extended period										3 years
Office Space | Bedminster, NJ.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net														$ 11,000									$ 11,000
Lease commencement date														Apr. 01, 2022
Lease expiration date																							Mar. 31, 2022
Number of rent free periods														4 months									4 months
Lease expansion date														Jul. 31, 2027
Office Space | Princeton, NJ.
Commitments And Contingencies [Line Items]
Operating lease rent expense, net																					$ 6,000
Lease expiration date																					Aug. 31, 2022		Apr. 30, 2016
Number of rent free periods																					5 months
Office Space | New York City
Commitments And Contingencies [Line Items]
Operating lease rent expense, net																						$ 446,000
Lease commencement date																						Oct. 01, 2017
Lease expiration date																						Sep. 30, 2028
Number of rent free periods																						12 months
Payments for tenant improvements																						$ 2,080,000
Office Space | Livingston, NJ
Commitments And Contingencies [Line Items]
Operating lease rent expense, net																					$ 2,000
Lease expiration date																					Jan. 31, 2019
Office Space | Boston, MA
Commitments And Contingencies [Line Items]
Operating lease rent expense, net																			$ 33,000
Lease commencement date																			Jan. 01, 2018
Lease expiration date																			Apr. 30, 2023
Number of rent free periods																			1 month
Office Space | La Jolla, CA
Commitments And Contingencies [Line Items]
Operating lease rent expense, net												$ 3,000
Lease expiration date												Jan. 31, 2020
Office Space | San Diego, CA
Commitments And Contingencies [Line Items]
Operating lease rent expense, net												$ 12,000
Lease commencement date												Feb. 01, 2020
Lease expiration date												Jun. 30, 2025
Number of rent free periods												4 months
Payments for tenant improvements												$ 27,000
Office Space | Milwaukee, WI
Commitments And Contingencies [Line Items]
Operating lease rent expense, net	$ 12,000	$ 20,000									$ 12,000
Lease expiration date	Jun. 30, 2023										Dec. 31, 2022
Number of rent free periods		24 months
After commencement date		132 months
Office Equipment
Commitments And Contingencies [Line Items]
Finance lease obligation																									344,000	253,000
Office Equipment | Two Copiers | Through August 19, 2023
Commitments And Contingencies [Line Items]
Lease expiration date							Aug. 19, 2023
Assets acquired under capital leases							$ 43,000
Capital lease, period							3 years
Capital lease, minimum monthly payment							$ 1,000
Office Equipment | Two Copiers | Through August 19, 2023
Commitments And Contingencies [Line Items]
Lease expiration date							Aug. 19, 2023
Assets acquired under capital leases							$ 39,000
Capital lease, period							3 years
Capital lease, minimum monthly payment							$ 1,000
Office Equipment | Two Copiers | Through June 30, 2024
Commitments And Contingencies [Line Items]
Lease expiration date						Jun. 30, 2024
Assets acquired under capital leases						$ 52,000
Capital lease, period						3 years
Capital lease, minimum monthly payment						$ 1,000
Office Equipment | Four Copiers
Commitments And Contingencies [Line Items]
Lease expiration date															Jan. 31, 2026
Assets acquired under capital leases															$ 94,000
Capital lease, period															5 years
Capital lease, minimum monthly payment															$ 2,000
Office Equipment | Copier | Through April 30, 2025
Commitments And Contingencies [Line Items]
Assets acquired under capital leases									$ 82,000
Capital lease, period									5 years
Capital lease, minimum monthly payment									$ 1,000
Office Equipment | Copier | Through May 31, 2023
Commitments And Contingencies [Line Items]
Assets acquired under capital leases								$ 59,000
Capital lease, period								3 years
Capital lease, minimum monthly payment								$ 2,000
Office Equipment | Copier | Through April 30, 2026
Commitments And Contingencies [Line Items]
Lease expiration date					Apr. 30, 2026
Assets acquired under capital leases					$ 31,000
Capital lease, period					4 years
Capital lease, minimum monthly payment					$ 1,000
Office Equipment | Copier | Through August 31, 2025
Commitments And Contingencies [Line Items]
Lease expiration date				Aug. 31, 2025
Assets acquired under capital leases				$ 30,000
Capital lease, period				3 years
Capital lease, minimum monthly payment				$ 1,000
Office Equipment | Copier | Through September 30, 2027
Commitments And Contingencies [Line Items]
Lease expiration date			Sep. 30, 2027
Assets acquired under capital leases			$ 210,000
Capital lease, period			5 years
Capital lease, minimum monthly payment			$ 4,000
Office Equipment | Copier | Through November 30, 2025
Commitments And Contingencies [Line Items]
Lease expiration date				Nov. 30, 2025
Assets acquired under capital leases				$ 11,000
Capital lease, period				39 months
Capital lease, minimum monthly payment				$ 300
Letter of Credit
Commitments And Contingencies [Line Items]
Refundable security deposit																									506,000	$ 506,000
Letter of Credit | Boston landlord
Commitments And Contingencies [Line Items]
Refundable security deposit																									$ 80,000
General and administrative
Commitments And Contingencies [Line Items]
Operating lease rent expense, net																											$ 6,228,000