Annual report pursuant to Section 13 and 15(d)

Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Detail)

v3.21.1
Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]        
Cash and cash equivalents $ 17,564 $ 5,789    
Restricted cash 312 312    
Total cash, cash equivalents, and restricted cash in the consolidated statement of cash flows $ 17,876 $ 6,101 $ 8,356 $ 11,896