Stock-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended						12 Months Ended
	Jun. 30, 2013 2008 Incentive Plan [Member]	Jun. 30, 2013 2008 Incentive Plan [Member] Employees [Member]	Jun. 30, 2013 2008 Incentive Plan [Member] Non-Employee Directors [Member] Vesting Period Three Years [Member]	Jun. 30, 2013 2008 Incentive Plan [Member] Non-Employee Directors [Member] Vesting Period One Year [Member] Y	Jun. 30, 2008 Employee Share Option Plan [Member]	Jun. 30, 2012 Employee Share Option Plan [Member]	Jun. 30, 2008 Employee Share Option Plan [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance	4,841,255
Shares available for grant	1,056,459
Percentage increase on outstanding shares	4.00%
Number of shares reserved for issuance, increased	750,000
Option grants	616,760	411,760	60,000	145,000
Options vesting period		4 years	3 years				3 years
Cliff vesting period				1
Contractual life of option grants	10 years				5 years
Trading history	8 years 6 months 0 days
Assumed dividend yield	0.00%
Prior year stock-based compensation expense	$ 121,000
Unrecognized compensation expense	$ 748,000
Unrecognized compensation expense weighted average period	1 year 7 months 24 days
Australian dollar denomination stock option outstanding equivalent to Us dollar						$ 5.59