Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock 2024 Underwritten Public Offering	Common Stock 2025 Underwritten Public Offering	Common Stock Private Placement 2024	Common Stock Private Placement 2025	Common Stock	Additional Paid-in Capital 2024 Underwritten Public Offering Pre-funded warrants	Additional Paid-in Capital 2024 Underwritten Public Offering	Additional Paid-in Capital 2025 Underwritten Public Offering Pre-funded warrants	Additional Paid-in Capital 2025 Underwritten Public Offering	Additional Paid-in Capital Private Placement 2024	Additional Paid-in Capital Private Placement 2025	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	2024 Underwritten Public Offering Pre-funded warrants	2024 Underwritten Public Offering	2025 Underwritten Public Offering Pre-funded warrants	2025 Underwritten Public Offering	Private Placement	Private Placement 2024	Private Placement 2025	Pre-funded warrants	Total
Balance beginning at Jun. 30, 2023					$ 37							$ 377,471	$ (351)	$ (260,985)									$ 116,172
Balance beginning (in shares) at Jun. 30, 2023					36,827,567
Proceeds from issuance of equity securities	$ 13					$ 14,096	$ 49,004								$ 14,096	$ 49,017
Proceeds from issuance of common stock for cash (in shares)	13,036,589																		1,500,000
Commissions and other offering costs												(548)											(548)
Issuance of common stock upon exercise of stock options												246											$ 246
Issuance of common stock upon exercise of stock options (in shares)					81,588																		81,588
Share-based compensation												7,360											$ 7,360
Cashless exercise of pre-funded warrants					$ 6							(6)
Cashless exercise of pre-funded warrants (in shares)					6,300,080																	6,300,080
Acquisition and retirement of treasury shares pursuant to Exchange Agreement					$ (3)							(5,697)											(5,700)
Acquisition and retirement of treasury shares pursuant to Exchange Agreement (in shares)					(3,000,000)
Reclassification of warrant derivative liability to equity												8,547											8,547
Net change in accumulated other comprehensive income (loss)													272										272
Net loss														(68,459)									(68,459)
Balance ending at Jun. 30, 2024					$ 53							450,473	(79)	(329,444)									$ 121,003
Balance ending (in shares) at Jun. 30, 2024					53,245,824																		53,245,824
Proceeds from issuance of equity securities		$ 25	$ 1	$ 1				$ 21,089	$ 76,169	$ 5,999	$ 4,209						$ 21,089	$ 76,194		$ 6,000	$ 4,210
Proceeds from issuance of common stock for cash (in shares)		24,940,769	1,500,000	1,295,383															1,300,000
Commissions and other offering costs												(546)											$ (546)
Issuance of common stock upon exercise of stock options					$ 1							1,395											$ 1,396
Issuance of common stock upon exercise of stock options (in shares)					488,742																		488,742
Share-based compensation												7,121											$ 7,121
Cashless exercise of pre-funded warrants					$ 6							(6)
Cashless exercise of pre-funded warrants (in shares)					5,525,267																	5,525,267
Net change in accumulated other comprehensive income (loss)													72										72
Net loss														(74,412)									(74,412)
Balance ending at Jun. 30, 2025					$ 87							$ 565,903	$ (7)	$ (403,856)									$ 162,127
Balance ending (in shares) at Jun. 30, 2025					86,995,985																		86,995,985