Stockholders' Equity (Narrative) (Detail) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended		1 Months Ended
Jan. 31, 2011 Year	Jun. 30, 2012	Jun. 30, 2011	Aug. 31, 2012 Subsequent Event Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued to institutional investors	2,210,000			2,494,419
Number of warrants to purchase shares of common stock issued	552,500			623,605
Proceeds from issuance of common stock and warrants	$ 11.05			$ 5.40
Issue price per unit	$ 5.00			$ 2.15
Percentage of warrants on common stock	25.00%			25.00%
Warrant exercise price	$ 5.00			$ 2.50
Term of warrants	5			5
Stock issuance costs	$ 1.0			$ 7.0
Weighted average exercise price of warrants		$ 7.80	$ 8.14
Outstanding warrants expiration date		July 19, 2012

Common Stock Warrant Exercise Price Per Share

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- Definition

Outstanding Australian Warrants Expiration Date

+ References

No definition available.

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- Definition

Percentage Of Shares Of Common Stock Issued Under Terms Of Warrant Transactions

+ References

No definition available.

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- Definition

Proceeds From Issuance Of Common Stock And Warrants

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No definition available.

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- Definition

Term Of Warrants Issued

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No definition available.

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- Definition

Warrants Granted To Purchase Common Stock

+ References

No definition available.

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- Definition

Warrants Weighted Average Exercise Price Converted To US Dollars

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No definition available.

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- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18, 19, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section H

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- Definition

Number of new stock issued during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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