Quarterly report pursuant to Section 13 or 15(d)

Subsequent events (Detail)

v3.23.2
Subsequent events (Detail)
$ / shares in Units, $ in Thousands
Jul. 17, 2023
USD ($)
D
$ / shares
shares
Aug. 10, 2023
USD ($)
Jul. 12, 2023
tranche
Jun. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
SUBSEQUENT EVENTS                  
Stockholders equity | $       $ (8,678) $ (1,910) $ (15,132) $ 26,037 $ 47,482 $ 65,662
Subsequent Event [Member] | July 2023 Private Placement                  
SUBSEQUENT EVENTS                  
Number of tranches | tranche     2            
Number of calendar days following each closing | D 30                
Subsequent Event [Member] | July 2023 Private Placement | Minimum                  
SUBSEQUENT EVENTS                  
Number of days following applicable closing | D 90                
Stockholders equity | $   $ 2,500              
Subsequent Event [Member] | July 2023 Private Placement | Maximum                  
SUBSEQUENT EVENTS                  
Number of days following applicable closing | D 120                
Subsequent Event [Member] | July 2023 Private Placement | Closing of the initial tranche                  
SUBSEQUENT EVENTS                  
Shares issued | shares 24,260,644                
Share price $ 0.47                
Gross proceeds form private placement | $ $ 20,000                
Net Proceeds From Issuance Of Private Placement | $ $ 18,700                
Subsequent Event [Member] | July 2023 Private Placement | Closing of second tranche                  
SUBSEQUENT EVENTS                  
Shares issued | shares 42,600,000                
Gross proceeds form private placement | $ $ 20,000                
Measurement Period 12 months                
Number of days volume weighted average price of | D 10                
Subsequent Event [Member] | July 2023 Private Placement | Closing of second tranche | Minimum                  
SUBSEQUENT EVENTS                  
Share price $ 1.41                
Minimum number of shares traded | shares 10,000,000                
Subsequent Event [Member] | July 2023 Private Placement | Prefunded Warrants | Closing of the initial tranche                  
SUBSEQUENT EVENTS                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 18,331,547                
Exercise price per warrants $ 0.469                
Exercise price of warrant 0.001                
Subsequent Event [Member] | July 2023 Private Placement | Second Closing Warrants | Closing of second tranche                  
SUBSEQUENT EVENTS                  
Share price $ 0.125                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 85,200,000                
Exercise price of warrant $ 0.47                
Warrant coverage on number of shares of common stock or warrants Sold AND To be Sold 100.00%                
Warrants term 5 years