Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Cantor Fitzgerald Underwriting) (Narrative) (Details)

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Stockholders' Equity (Cantor Fitzgerald Underwriting) (Narrative) (Details) - USD ($)
 3 Months Ended 9 Months Ended
May 07, 2021
Feb. 24, 2021
Jan. 11, 2021
Dec. 10, 2020
Dec. 08, 2020
Mar. 31, 2022
Mar. 31, 2022
Mar. 31, 2021
Nov. 25, 2020
Cost related to issuance of shares             $ 0 $ 4,713,000  
Sales Agreement [Member] | Cantor Fitzgerald [Member]                  
Number of shares issued 1,716,800 113,200       0      
Proceeds from sale of shares, net of issuance cost $ 2,995,000 $ 238,000              
Underwritten Public Offering [Member] | Cantor Fitzgerald [Member]                  
Number of shares agreed to be issued, maximum         29,661,017        
Number of shares issued       29,660,000          
Gross proceeds from issuance of common stock       $ 35,200,000          
Cost related to issuance of shares       $ 2,900,000          
Over-Allotment Option [Member] | Cantor Fitzgerald [Member]                  
Number of shares agreed to be issued, maximum         4,449,152        
Number of shares issued     4,240,828            
Proceeds from sale of shares, net of issuance cost     $ 4,600,000            
Sales Agreement [Member] | Cantor Fitzgerald [Member]                  
Aggregate offering price                 $ 100,000,000