Long-Term Debt Convertible Note Hedge and Warrant Transactions (Details) (USD $)	12 Months Ended
Mar. 31, 2015 counterparty	Mar. 31, 2014	Jul. 02, 2009
Debt Disclosure [Abstract]
Number of counterparties	3aoi_NumberOfCounterparties
Class of warrant or right, exercise price of warrants or rights (in dollars per share)		$ 7.3325	$ 5.0280
Class of warrant or right, number of securities called by warrants or rights (in shares)		45,743,836

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 2

-Article 4

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant