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Restatement of Prior Period Financial Statements - Summary of Restated Consolidated Statements of Cash Flows (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 25, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Dec. 31, 2024
Mar. 31, 2025
Jun. 30, 2025
Jun. 30, 2024
Cash flows from operating activities:                  
Net loss   $ (8,805)     $ (5,059)     $ (37,917) $ (21,751)
Adjustments to reconcile net loss to net cash used in operating activities:                  
Depreciation and amortization               66 87
Amortization of right-of-use assets               330 256
Unrealized loss on investment               0 1
Gain on extinguishment of liabilities   0     0     (764) 0
Share-based compensation expense               17,426 830
Changes in operating assets and liabilities:                  
Trade and other receivables               197 (176)
Prepaid and other assets               (111) 645
Trade and other payables               2,378 (941)
Accrued employee benefits               81 (39)
Lease liabilities               (356) (275)
Net cash used in operating activities               (23,588) (19,403)
Cash flows from investing activities:                  
Purchase of property and equipment               (18) (179)
Net cash used in investing activities               (18) (179)
Cash flows from financing activities:                  
Proceeds from issuance of common stock, pre-funded warrants, and common warrants               30,460 70,883
Proceeds from exercise of pre-funded warrants, Series 2 warrants common warrants               42,344 3,038
Share and pre-funded warrants issuance transaction costs $ (1,100)             (2,319) (5,892)
Net cash provided by financing activities               70,485 68,029
Effects of exchange rate changes on cash, cash equivalents, and restricted cash               49 (8)
Net increase in cash, cash equivalents, and restricted cash               46,928 48,439
Cash, cash equivalents, and restricted cash, beginning of period         50,929 $ 50,929 $ 50,929 50,929 2,490
Cash, cash equivalents, and restricted cash, end of period   97,857           97,857 50,929
Supplemental disclosure of cash flow information:                  
Initial measurement of operating lease right-of-use assets and liabilities               255 0
Re-measurement of operating lease right-of-use assets and liabilities               666 0
As Reported                  
Cash flows from operating activities:                  
Net loss     $ (9,354) $ (7,357) (5,059) (12,416) (21,770)    
Adjustments to reconcile net loss to net cash used in operating activities:                  
Depreciation and amortization           39 52    
Amortization of right-of-use assets           133 226    
Unrealized loss on investment       0   0 0    
Gain on extinguishment of liabilities     0 (764)   (764) (764)    
Share-based compensation expense           1,378 3,975    
Changes in operating assets and liabilities:                  
Trade and other receivables           226 226    
Prepaid and other assets           165 147    
Trade and other payables           (980) 2,862    
Accrued employee benefits           77 (82)    
Lease liabilities           (147) (247)    
Net cash used in operating activities           (12,289) (15,375)    
Cash flows from investing activities:                  
Purchase of property and equipment           (12) (18)    
Net cash used in investing activities           (12) (18)    
Cash flows from financing activities:                  
Proceeds from issuance of common stock, pre-funded warrants, and common warrants             30,459    
Proceeds from exercise of pre-funded warrants, Series 2 warrants common warrants           39,529 39,729    
Share and pre-funded warrants issuance transaction costs           (2) (2,247)    
Net cash provided by financing activities           39,527 67,941    
Effects of exchange rate changes on cash, cash equivalents, and restricted cash           190 169    
Net increase in cash, cash equivalents, and restricted cash           27,416 52,717    
Cash, cash equivalents, and restricted cash, beginning of period   103,646 78,345   50,929 50,929 50,929 50,929  
Cash, cash equivalents, and restricted cash, end of period     103,646 78,345   78,345 103,646   50,929
Supplemental disclosure of cash flow information:                  
Initial measurement of operating lease right-of-use assets and liabilities             255    
Re-measurement of operating lease right-of-use assets and liabilities             666    
Adjustment                  
Cash flows from operating activities:                  
Net loss     (5,147) (2,195)   (2,195) (7,342)    
Adjustments to reconcile net loss to net cash used in operating activities:                  
Depreciation and amortization           0 0    
Amortization of right-of-use assets           0 0    
Unrealized loss on investment       0   0 0    
Gain on extinguishment of liabilities     0 0   0 0    
Share-based compensation expense           2,195 7,342    
Changes in operating assets and liabilities:                  
Trade and other receivables           0 0    
Prepaid and other assets           0 0    
Trade and other payables           0 0    
Accrued employee benefits           0 0    
Lease liabilities           0 0    
Net cash used in operating activities           0 0    
Cash flows from investing activities:                  
Purchase of property and equipment           0 0    
Net cash used in investing activities           0 0    
Cash flows from financing activities:                  
Proceeds from issuance of common stock, pre-funded warrants, and common warrants             0    
Proceeds from exercise of pre-funded warrants, Series 2 warrants common warrants           0 0    
Share and pre-funded warrants issuance transaction costs           0 0    
Net cash provided by financing activities           0 0    
Effects of exchange rate changes on cash, cash equivalents, and restricted cash           0 0    
Net increase in cash, cash equivalents, and restricted cash           0 0    
Cash, cash equivalents, and restricted cash, beginning of period   0 0   0 0 0 0  
Cash, cash equivalents, and restricted cash, end of period     0 0   0 0   0
Supplemental disclosure of cash flow information:                  
Initial measurement of operating lease right-of-use assets and liabilities             0    
Re-measurement of operating lease right-of-use assets and liabilities             0    
As Restated                  
Cash flows from operating activities:                  
Net loss     (14,501) (9,552)   (14,611) (29,112)    
Adjustments to reconcile net loss to net cash used in operating activities:                  
Depreciation and amortization           39 52    
Amortization of right-of-use assets           133 226    
Unrealized loss on investment       0   0 0    
Gain on extinguishment of liabilities     0 (764)   (764) (764)    
Share-based compensation expense           3,573 11,317    
Changes in operating assets and liabilities:                  
Trade and other receivables           226 226    
Prepaid and other assets           165 147    
Trade and other payables           (980) 2,862    
Accrued employee benefits           77 (82)    
Lease liabilities           (147) (247)    
Net cash used in operating activities           (12,289) (15,375)    
Cash flows from investing activities:                  
Purchase of property and equipment           (12) (18)    
Net cash used in investing activities           (12) (18)    
Cash flows from financing activities:                  
Proceeds from issuance of common stock, pre-funded warrants, and common warrants             30,459    
Proceeds from exercise of pre-funded warrants, Series 2 warrants common warrants           39,529 39,729    
Share and pre-funded warrants issuance transaction costs           (2) (2,247)    
Net cash provided by financing activities           39,527 67,941    
Effects of exchange rate changes on cash, cash equivalents, and restricted cash           190 169    
Net increase in cash, cash equivalents, and restricted cash           27,416 52,717    
Cash, cash equivalents, and restricted cash, beginning of period   $ 103,646 78,345   $ 50,929 50,929 50,929 $ 50,929  
Cash, cash equivalents, and restricted cash, end of period     $ 103,646 $ 78,345   $ 78,345 103,646   $ 50,929
Supplemental disclosure of cash flow information:                  
Initial measurement of operating lease right-of-use assets and liabilities             255    
Re-measurement of operating lease right-of-use assets and liabilities             $ 666