Deed of Cross Guarantee - Consolidated Income Statement Of The Parties To The Deed (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2021		Jun. 30, 2020		Jun. 30, 2019
Consolidated income statement of the parties to the deed [Line Items]
Revenues	$ 10,304	$ 8,765	$ 5,103	$ 5,060	$ 3,877	$ 3,877	$ 3,259	$ 3,250	$ 29,232		$ 14,263		$ 5,474
Cost of sales	(2,053)	(2,146)	(821)	(929)	(874)	(634)	(846)	(619)	(5,949)		(2,973)		(1,271)
Gross profit	8,251	6,619	4,282	4,131	3,003	3,243	2,413	2,631	23,283		11,290		4,203
Operating Expenses:
Sales and marketing expenses	(4,146)	(3,649)	(3,600)	(3,265)	(4,260)	(4,375)	(3,972)	(3,099)	(14,660)	[1]	(15,706)	[1]	(12,549)	[1]
General and administrative expenses	(5,275)	(5,422)	(3,401)	(8,302)	(9,709)	(12,787)	(7,107)	(3,422)	(22,400)	[1]	(33,025)	[1]	(15,099)	[1]
Product development expense	3,974	4,109	3,361	3,374	2,538	2,495	2,312	1,819	14,818	[1]	9,164	[1]	8,004	[1]
Total operating expenses	(13,395)	(13,180)	(10,362)	(14,941)	(16,507)	(19,657)	(13,391)	(8,340)	(51,878)		(57,895)		(35,652)
Other Income	2	7	4	4	121	363	99	103
Net loss	$ (4,718)	$ (5,997)	$ (5,641)	$ (10,227)	$ (12,914)	$ (15,048)	$ (10,502)	$ (3,566)	(26,583)		$ (42,030)		$ (25,102)
Avita Medical And Australian Wholly Owned Subsidaries Closed Group
Consolidated income statement of the parties to the deed [Line Items]
Revenues									380
Cost of sales									(75)
Gross profit									305
Operating Expenses:
Sales and marketing expenses									(208)
General and administrative expenses									(182)
Product development expense									1
Total operating expenses									(389)
Other Income									3
Net loss									$ (81)

[1] Refer to Note 2 for reclassification of share-based compensation expense.