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Stock-Based Compensation (Narrative) (Detail) (USD $) | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2012 2008 Incentive Plan | Jun. 30, 2012 2008 Incentive Plan Employees | Jun. 30, 2012 2008 Incentive Plan Non-Employee Directors Year | Jun. 30, 2012 2008 Incentive Plan Performance And Service Condition | Jun. 30, 2008 Employee Share Option Plan | Jun. 30, 2012 Employee Share Option Plan | Jun. 30, 2008 Employee Share Option Plan Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares reserved for issuance | 4,091,255 |  |  |  |  |  |
Shares available for grant | 807,653 |  |  |  |  |  |
Percentage increase on outstanding shares | 4.00% |  |  |  |  |  |
Number of shares reserved for issuance, increased | 750,000 |  |  |  |  |  |
Option grants | 768,350 | 533,350 | 135,000 | 100,000 |  |  |
Options vesting period |  | 4 years |  |  |  |  | 3 years
Cliff vesting period |  |  | 1 |  |  |  |
Contractual life of option grants |  |  |  | 10-year | Five years |  |
Trading history | 7 years 6 months |  |  |  |  |  |
Assumed dividend yield | 0.00% |  |  |  |  |  |
Prior year stock-based compensation expense | $ 121,000 |  |  |  |  |  |
Unrecognized compensation expense | $ 1,200,000 |  |  |  |  |  |
Unrecognized compensation expense weighted average period | 1 year 9 months 18 days |  |  |  |  |  |
Australian dollar denomination stock option outstanding equivalent to Us dollar |  |  |  |  |  | $ 5.59 |

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- Definition As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph h -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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