Property and Equipment, Net - Summary of Property and Equipment for Fixed Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Total:	$ 19,377	$ 18,843
Less: accumulated depreciation	(12,850)	(12,319)
Property and Equipment, net of finance leased assets	6,527	6,524
Computer equipment
Property Plant And Equipment [Line Items]
Total:	2,117	2,101
Survey equipment
Property Plant And Equipment [Line Items]
Total:	5,100	5,088
Vehicles
Property Plant And Equipment [Line Items]
Total:	1,110	1,032
Furniture and fixtures
Property Plant And Equipment [Line Items]
Total:	2,402	2,398
Leasehold improvements
Property Plant And Equipment [Line Items]
Total:	7,900	7,727
Software
Property Plant And Equipment [Line Items]
Total:	316	316
Fixed Assets Pending Lease Financing
Property Plant And Equipment [Line Items]
Total:	$ 432	$ 181