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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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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.

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

-Publisher FASB

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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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).

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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.

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Gross number of share options (or share units) granted during the period.

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