Note 1 - Company Overview (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
Dec. 31, 2012
Contractual Obligation (in Dollars)	$ 231
Net closing cash balance (in Dollars)	$ 27
Biota
Ownership Percentage	83.00%
Nabi
Ownership Percentage	17.00%

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant