Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014
BARDA [Member]
Current liabilities:
Contract payable (BARDA)	$ 1.0	$ 18.6
Cash and cash equivalents	$ 44.7	81.7
Contract receivable (BARDA)		17.8
Other accounts receivable, net of allowance	$ 12.6	$ 0.9
Short-term investments	12.9
Prepaid expenses and other assets	0.6	$ 0.7
Total current assets	70.8	101.1
Long-term investments	7.9	10.0
Property and equipment, net	0.2	2.0
Deferred tax asset	0.5	0.9
Total non-current assets	8.6	12.9
Total assets	79.4	114.0
Contract payable (BARDA)	8.3	26.0
Accounts payable	1.9	2.8
Accrued expenses and other current liabilities	5.3	3.4
Accrued severance obligations	0.1	1.2
Deferred tax liability	0.5	$ 0.9
Short-term note payable	0.2
Total current liabilities	9.0	$ 26.9
Long-term note payable, net of current portion	0.8
Other liabilities, net of current portion	0.1	$ 0.2
Total liabilities	$ 9.9	$ 27.1
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.10 par value; 200,000,000 shares authorized; 38,609,086 shares and 35,100,961 shares issued and outstanding at June 30, 2015 and June 30, 2014, respectively	$ 3.9	$ 3.5
Common stock-treasury
Additional paid-in capital	$ 155.6	$ 146.4
Accumulated other comprehensive income	18.9	26.8
Accumulated deficit	(108.9)	(89.8)
Total stockholders’ equity	69.5	86.9
Total liabilities and stockholders’ equity	$ 79.4	$ 114.0