Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Dec. 05, 2012	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Dec. 05, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, description			Options and restricted stock units granted to our non-employee directors vest in full upon the earlier of (i) one full year of service on the Board following date of grant or (ii) the date of the next annual meeting of stockholders.
Options exercisable, weighted average remaining contractual life			4 years 7 months 6 days
Total unrecognized share-based compensation cost related to stock options			$ 6.5
Shares purchased under the Plan			200,000	200,000	200,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period of share-based compensation vested, years			4 years
Total unrecognized share-based compensation cost, weighted-average period, years			10 months 24 days
Stock options | Share-based compensation granted after December 5, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expire from date of grant, years			8 years
Stock options | Share-based compensation granted prior to December 5, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expire from date of grant, years			10 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period of share-based compensation vested, years		4 years
Total unrecognized share-based compensation cost, weighted-average period, years			2 years 3 months 18 days
Total unrecognized share-based compensation cost related to RSUs			$ 30.9
Unrecognized share-based compensation cost			$ 38.2
2012 Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares approved	2,000,000
Shares issued under the Plan	2,000,000
Shares purchased under the Plan			700,000
Unrecognized share-based compensation cost			$ 0.8
The 2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares approved						3,500,000
Shares reserved for issuance exercise of options			2,300,000
The 2010 Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant			2,500,000
Chief Financial Officer [Member] | Resignation Agreement In October Two Thousand Fourteen
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense				$ 3.1
Chief Executive Officer [Member] | Resignation Agreement In February Two Thousand Fifteen [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense				$ 12.8