Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity At-the-Market Offering (Details)

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Stockholders' Equity At-the-Market Offering (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Oct. 28, 2021
Jul. 14, 2021
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Subsidiary, Sale of Stock [Line Items]                
Number of shares authorized to be sold under equity distribution agreement (in shares)     35,000,000       35,000,000  
Number of common shares issued under equity distribution agreement and outstanding as of period-end (in shares)     7,502,435       7,502,435  
Accumulated proceeds from issuance of common shares under equity distribution agreement     $ 128,700       $ 128,700  
Number of shares of stock issued during period (in shares) 30,000,000 40,000,000            
Issuance of stock, net of offering costs $ 193,700 $ 256,500 $ 82 $ 323 $ 93 $ 99    
At the Market Offering [Member]                
Subsidiary, Sale of Stock [Line Items]                
Number of shares of stock issued during period (in shares)     0   0   0 0
Issuance of stock, net of offering costs     $ 0   $ 0   $ 0 $ 0