The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

Name:	us-gaap_DebtConversionOriginalDebtAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Subsequent Events (Narrative) (Detail) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended
Subsequent Events (Narrative) (Detail) (USD $)	Oct. 20, 2014	Nov. 24, 2014	Sep. 30, 2014	Nov. 06, 2014
Subsequent Event [Line Items]
Debt Conversion, Original Debt, Amount	$ 26,000,000
Convertible note rate conversion trading days (in days)		20	0
Percentage of royalty acquired				75.00%
Cash payment for purchase of royalty right				$ 65,600,000