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Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended	12 Months Ended
	Sep. 23, 2025	Jul. 17, 2025	Dec. 06, 2023	Oct. 31, 2023	Jul. 31, 2025	Jun. 30, 2025	Jun. 30, 2024	Sep. 24, 2025	Jul. 24, 2025
Targeted or Tracking Stock, Stock [Line Items]
Common stock, shares issued						6,663,000	6,663,000
Unpaid common stock dividend							$ 1.75
Closing agreement date				Nov. 17, 2023		Nov. 17, 2023
Dividend paid			$ 11,700			$ 0	$ 11,660
Accumulated losses since inception						404,164	$ 388,219
Cash and cash equivalents and short term investments						$ 18,000
O 2024 Q2 Dividends
Targeted or Tracking Stock, Stock [Line Items]
Unpaid common stock dividend						$ 1.75
Subsequent Event | Pre-Funded Warrant
Targeted or Tracking Stock, Stock [Line Items]
Surrendered warrants to acheive common stock	2,808,070
Offering price per share		$ 3.4199			$ 3.4199
Warrants issued to purchase common stock		6,022,869						546,348
Common stock, shares issued	2,807,967								2,084,509
Exercise price		$ 0.0001						$ 0.0001
Subsequent Event | Private Placement Offering
Targeted or Tracking Stock, Stock [Line Items]
Proceeds from private investment in private equity					$ 100,000
Number of shares issued in the offering		23,216,898
Offering price per share		$ 3.42
Exercise price					$ 4.1
Maximum | Subsequent Event | Private Placement Offering
Targeted or Tracking Stock, Stock [Line Items]
Warrants issued to purchase common stock					3,070,177

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