Quarterly report pursuant to Section 13 or 15(d)

Supplementary Statement of Cash Flows Information - Schedule of Supplementary Statement of Cash Flows Information (Detail)

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Supplementary Statement of Cash Flows Information - Schedule of Supplementary Statement of Cash Flows Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Supplemental Cash Flow Elements [Abstract]    
Non-cash issue costs (note 6) $ 289 $ 333
Issue costs in accounts payable and accrued liabilities 48 169
Equipment additions reclassified from prepaid expenses 447  
Preferred Stock Series C    
Supplemental Cash Flow Elements [Abstract]    
Preferred Stock common stock dividend (note 6) $ 362 $ 2,462