Equity (Tables)

12 Months Ended

Jun. 30, 2018

Disclosure Of Classes Of Share Capital [Abstract]

Schedule of Share Capital

(i) Share capital

	As of June 30,
	2018			2017			2016			2018		2017		2016
	Shares No.									(U.S. dollars, in thousands)
Contributed equity
(i)     Share capital
Ordinary shares(1)		482,639,654			428,221,398			381,373,137			889,481		830,425		770,272
Less: Treasury Shares		(3,500,000	)		(3,500,000	)		(3,500,000	)		—		—		—
Total Contributed Equity		479,139,654			424,721,398			377,873,137			889,481		830,425		770,272

(1) As of June 30, 2018, total ordinary shares include 2,000,000 unpaid shares issued to Kentgrove Capital on January 19, 2018.

Summary of Movements in Ordinary Share Capital

(ii) Movements in ordinary share capital

	As of June 30,						As of June 30,
	2018		2017		2016		2018			2017			2016
	Shares No.						(U.S. dollars, in thousands)
Opening balance		428,221,398		381,373,137		336,997,729		830,425			770,272			709,191
Issues of ordinary shares during the period
Exercise of share options(1)		289,245		272,579		422,903		116			149			268
Share issue for Nasdaq IPO		—		—		42,675,295		—			—			68,280
Consideration for available-for-sale financial    assets		—		—		1,277,210		—			—			1,495
Share based compensation for services rendered		540,051		280,911		—		662			240			—
Payment for contingent consideration		6,029,545		—		—		10,000			—			—
Entitlement offer to existing eligible shareholders		36,191,982		—		—		40,449			—			—
Placement of shares under an equity facility    agreement(2)		2,000,000		—		—		—			—			—
Placement of shares under a share placement    agreement		—		46,294,771		—		—			61,710			—
Placement of shares under a license    agreement		892,857		—		—		1,000			—			—
Transaction costs arising on share issue								(2,869	)		(1,959	)		(9,096	)
		45,943,680		46,848,261		44,375,408		49,358			60,140			60,947
Unissued ordinary shares during the period
Placement of shares under a share placement    agreement(3)		8,474,576		—		—		10,000			—			—
Transaction costs arising on share issue								(340	)		—			—
		8,474,576		—		—		9,660			—			—
Total contributions of equity during the period		54,418,256		46,848,261		44,375,408		59,018			60,140			60,947
Share options reserve transferred to equity on    exercise of options								38			13			134
Ending balance		482,639,654		428,221,398		381,373,137		889,481			830,425			770,272

(1) Options are issued to employees, directors and consultants in accordance with the Mesoblast Employee Share Options Plan (“ESOP”). The shares issued and share capital received upon the exercise of options are recorded above.

(2) These shares were issued to Kentgrove Capital on January 19, 2018 in accordance with contractual obligations to maintain Mesoblast’s existing established equity facility.

(3) These shares were issued to NovaQuest on July 10, 2018, under a placement agreement entered into prior to June 30, 2018 pursuant to which NovaQuest purchased US$10.0 million of Mesoblast common shares.

Summary of Reserves

(i) Reserves

	As at June 30,
(in U.S. dollars, in thousands)	2018			2017
Share-based payments reserve		75,974			69,919
Investment revaluation reserve		21			(303	)
Foreign currency translation reserve		(39,276	)		(38,373	)
		36,719			31,243

Summary of Reconciliation of Reserves

(ii) Reconciliation of reserves

(in U.S. dollars, in thousands)	As at June 30,
Share-based payments reserve	2018			2017
Opening balance		69,919			64,999
Transfer to ordinary shares on exercise of options		(38	)		(13	)
Share option expense for the year		5,959			5,036
Reclassification of modified options to/(from) liability		134			(103	)
Closing Balance		75,974			69,919
Investment Revaluation Reserve
Opening balance		(303	)		(334	)
Changes in the fair value of available-for-sale financial assets		324			31
Closing Balance		21			(303	)
Foreign currency translation reserve
Opening balance		(38,373	)		(38,689	)
Currency (loss)/gain on translation of foreign operations    net assets		(903	)		316
Closing Balance		(39,276	)		(38,373	)