Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Schedule of error corrections and prior period adjustments (Detail)

v3.22.1
Summary of Significant Accounting Policies - Schedule of error corrections and prior period adjustments (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Reclassification [Line Items]              
Net loss $ (8,331) $ (12,787) $ (31,222) $ (39,966) $ (24,453) $ (35,201) $ (23,443)
Loss per share:              
Basic $ (0.26) $ (0.40) $ (0.98) $ (1.26) $ (1.03) $ (1.96) $ (1.45)
Diluted $ (0.26) $ (0.40) $ (0.98) $ (1.26) $ (1.03) $ (1.96) $ (1.45)
Weighted-average shares outstanding:              
Basic 32,098,715 31,647,131 31,799,313 31,651,295 41,933,050 31,650,173 31,169,435
Diluted 32,098,715 31,647,131 31,799,313 31,651,295 41,933,050 31,650,173 31,169,435
Previously Reported [Member]              
Reclassification [Line Items]              
Net loss $ (8,331) $ (12,787) $ (31,222) $ (39,966)      
Loss per share:              
Basic $ (0.27) $ (0.42) $ (1.03) $ (1.32)      
Diluted $ (0.27) $ (0.42) $ (1.03) $ (1.32)      
Weighted-average shares outstanding:              
Basic 30,732,921 30,281,520 30,433,641 30,285,684      
Diluted 30,732,921 30,281,520 30,433,641 30,285,684