Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Narrative (Details)

v3.23.1
Stockholders' Equity - Narrative (Details) - USD ($)
 1 Months Ended 12 Months Ended
Feb. 01, 2022
Apr. 07, 2021
Jan. 31, 2022
Feb. 28, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2018
Dec. 31, 2012
Feb. 28, 2022
Aug. 14, 2020
Jul. 15, 2020
Debt Instrument [Line Items]                      
Common stock, shares authorized (in shares)         1,000,000,000 1,000,000,000          
Common stock, par value (in dollars per share)         $ 0.0001 $ 0.0001          
Common stock, shares issued (in shares)         103,153,337 96,751,610          
Common stock, shares outstanding (in shares)         103,153,337 96,751,610          
Proceeds from sales of common stock, net of issuance costs         $ 4,298,000 $ 94,737,000          
Proceeds from warrant exercises         $ 0 $ 4,635,000          
Number of warrants (in shares)         6,632,561 5,636,801          
Warrants                      
Debt Instrument [Line Items]                      
Exercise price per share (in dollars per share)             $ 9.22        
Proceeds from warrant exercises           $ 4,635,000          
Warrant to purchase aggregate shares of common stock (in shares)             1,085,059        
Number of warrants (in shares)                     2,160,000
Series D1 Warrant                      
Debt Instrument [Line Items]                      
Exercise price per share (in dollars per share)               $ 5.54      
Warrant to purchase aggregate shares of common stock (in shares)               14,866      
Common Stock                      
Debt Instrument [Line Items]                      
Sale of common stock, net of issuance costs (in shares)         2,623,000 35,383,000          
PhunCoin Warrant                      
Debt Instrument [Line Items]                      
Exercise price per share (in dollars per share)         $ 11.50            
Common Stock | Warrants                      
Debt Instrument [Line Items]                      
Conversion of stock, shares issued (in shares)           2,060,000          
Exercise price per share (in dollars per share)       $ 2.25   $ 2.25         $ 4.00
Common Stock | Series D1 Warrant                      
Debt Instrument [Line Items]                      
Exercise price per share (in dollars per share)       $ 2.25              
Number of warrants (in shares)       35,555              
At Market Issuance Sales Agreement                      
Debt Instrument [Line Items]                      
Common stock, par value (in dollars per share)     $ 0.0001                
Aggregate offering price     $ 100,000,000                
Termination notice period     5 days                
Proceeds from sales of common stock, net of issuance costs         $ 4,562,000            
Payments of stock offering costs         101,000 $ 2,017,000          
Additional transaction costs         $ 163,000 178,000          
Aggregate net proceeds received $ 200,000,000         $ 65,210,000          
Gross proceeds of sales price per share (as a percent)   3.00%                  
At Market Issuance Sales Agreement | Warrants                      
Debt Instrument [Line Items]                      
Number of warrants (in shares)                 4,200,000    
At Market Issuance Sales Agreement | Common Stock                      
Debt Instrument [Line Items]                      
Sale of common stock, net of issuance costs (in shares)           20,951,043          
At Market Issuance Sales Agreement | Common Stock                      
Debt Instrument [Line Items]                      
Sale of common stock, net of issuance costs (in shares)         2,623,460            
Sales Agreement                      
Debt Instrument [Line Items]                      
Aggregate offering price                   $ 15,000,000  
At-The-Market Offering                      
Debt Instrument [Line Items]                      
Proceeds from sales of common stock, net of issuance costs           $ 5,058,000          
Payments of stock offering costs           $ 156,000          
At-The-Market Offering | Common Stock                      
Debt Instrument [Line Items]                      
Sale of common stock, net of issuance costs (in shares)           2,670,121          
Underwritten Offering                      
Debt Instrument [Line Items]                      
Proceeds from sales of common stock, net of issuance costs       $ 24,722,000              
Payments of stock offering costs       1,740,000              
Additional transaction costs       $ 75,000              
Underwritten Offering | Common Stock                      
Debt Instrument [Line Items]                      
Sale of common stock, net of issuance costs (in shares)       11,761,111              
Common stock exercise price (in dollars per share)       $ 2.25              
Public Warrant | Warrants                      
Debt Instrument [Line Items]                      
Exercise price per share (in dollars per share)         $ 0.01            
Last sale price of shares of common stock (exceeds, in dollars per share)         $ 21.00            
Number of days within 30-trading day period         20 days            
Trading day period         30 days            
Private Placement | Warrants                      
Debt Instrument [Line Items]                      
Exercise price per share (in dollars per share)         $ 11.50            
Minimum number of days written notice to redeem public warrants         30 days