Stockholders' Equity - Summary of the Company's Stock Options Activity (Detail) - Jun. 30, 2015 - Stock Options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Total
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Options outstanding, beginning of year	1,641
Number of options, Granted	0
Number of options, Exercised	(500)
Number of options, Expired / terminated	(8)
Number of options, Options outstanding, end of year	1,133
Number of options, Options exercisable, end of year	1,101
Number of options, Options expected to vest, end of year	26
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price, Options outstanding, beginning of year	$ 5.26
Weighted average exercise price, Granted	0.00
Weighted average exercise price, Exercised	4.96
Weighted average exercise price, Expired / terminated	8.71
Weighted average exercise price, Options outstanding, end of year	5.35
Weighted average exercise price, Options exercisable, end of year	5.37
Weighted average exercise price, Options expected to vest, end of year	$ 4.75
Weighted average remaining contractual life, Options outstanding (in years)	3 years 10 months 13 days
Weighted average remaining contractual life, Options exercisable (in years)	3 years 10 months 17 days
Weighted average remaining contractual life, Options expected to vest (in years)	3 years 7 months 10 days
Aggregate intrinsic value, Options outstanding	$ 31,685
Aggregate intrinsic value, Options exercisable	30,772
Aggregate intrinsic value, Options expected to vest	$ 750