Stock-Based Compensation - Aggregate Intrinsic Value (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2014
|
Sep. 30, 2013
|
---|---|---|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Aggregate intrinsic value, Stock option | $ 7,448,000 | $ 2,194,000 |
Restricted Stock [Member]
|
||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Aggregate intrinsic value, Restricted stock | $ 3,046,772 | $ 1,143,000 |