Annual report pursuant to Section 13 and 15(d)

Goodwill Impairment and Other General Expense - Additional Information (Detail)

v2.4.0.6
Goodwill Impairment and Other General Expense - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Impairment Of Assets [Line Items]  
Goodwill impairment losses recognized $ 22,456