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Supplemental Disclosures to the Unaudited Condensed Consolidated Balance Sheets and Unaudited Condensed Consolidated Statements of Cash Flows - Summary of Cash and Cash Equivalents Reconciliation (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Cash And Cash Equivalents [Abstract]        
Cash and cash equivalents $ 1,894 $ 0    
Restricted cash 0 325    
Total cash, cash equivalents and restricted cash $ 1,894 $ 325 $ 25,201 $ 50,029