Quarterly report pursuant to Section 13 or 15(d)

Percentage within Range by Which Enterprise Value Exceeded Carrying Value of Accounting Units, Including Goodwill (Detail)

v2.4.0.6
Percentage within Range by Which Enterprise Value Exceeded Carrying Value of Accounting Units, Including Goodwill (Detail) (> than 50%, USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Entity
> than 50%
 
Discounted Cash Flow Pricing Model, by Assumption [Line Items]  
Number of accounting units 1
Enterprise carrying value $ 962