Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Jun. 30, 2012	182,350,316		(1,816,178)
Balances at Jun. 30, 2012	$ 100.4	$ 0.7	$ (1.4)	$ (69.9)	$ 29.5	$ 59.3
Exchange differences on translation of foreign operations					$ (4.2)	(4.2)
Net loss				$ (8.9)		(8.9)
Total Comprehensive loss						$ (13.1)
New shares issued on exercise of options (in shares)	413,335
New shares issued on exercise of options	$ 0.4	$ (0.4)
New shares issued on vesting of options on merger	$ 1.1	(1.1)
Acquisition of Nabi Biopharmaceuticals (in shares)	(153,398,048)		(4,051,183)
Total purchase price	$ (98.5)	233.4	$ (115.7)			$ 19.2
Retirement of treasury shares (in shares)	(5,867,361)		5,867,361
Retirement of treasury shares	$ (0.6)	(116.5)	$ 117.1
Restricted stock units issued, net (in shares)	214,983
Retirement of common stock (in shares)	(3)
Share-based compensation		2.6				$ 2.6
Balances (in shares) at Jun. 30, 2013	28,352,326
Balances at Jun. 30, 2013	$ 2.8	$ 118.7		$ (78.8)	$ 25.3	$ 68.0
Change in fair value of investments
New shares issued on vesting of options on merger (in shares)	4,639,104
Exchange differences on translation of foreign operations					$ 1.5	$ 1.5
Net loss				$ (11.0)		(11.0)
Total Comprehensive loss						(9.5)
Restricted stock units issued, net (in shares)	62,650
Share-based compensation		$ 1.4				$ 1.4
Balances (in shares) at Jun. 30, 2014	35,100,961					35,100,961
Balances at Jun. 30, 2014	$ 3.5	146.4		$ (89.8)	$ 26.8	$ 86.9
Common stock issued (in shares)	6,685,985
Common stock issued	$ 0.7	26.1				26.8
Restricted stock units issued, net		$ 0.2				$ 0.2
Change in fair value of investments
Exchange differences on translation of foreign operations					$ (7.8)	$ (7.8)
Net loss				$ (19.1)		(19.1)
Total Comprehensive loss						$ (27.0)
New shares issued on exercise of options (in shares)
Restricted stock units issued, net (in shares)	8,125
Share-based compensation		$ 2.1				$ 2.1
Balances (in shares) at Jun. 30, 2015	38,609,086					38,609,086
Balances at Jun. 30, 2015	$ 3.9	155.6		$ (108.9)	$ 18.9	$ 69.5
Common stock issued (in shares)	3,500,000
Common stock issued	$ 0.4	$ 7.1				7.5
Change in fair value of investments					$ (0.1)	$ (0.1)