Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements used to Value Assets (Detail)

v2.4.0.6
Fair Value Measurements used to Value Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Long Lived Assets Held-for-sale [Line Items]  
Long-Lived Asset Held for Sale, fair value $ 1,700
Long-Lived Asset Held for Sale, Total Gains (Losses) 6,808
Significant Unobservable Inputs (Level 3)
 
Long Lived Assets Held-for-sale [Line Items]  
Long-Lived Asset Held for Sale, fair value $ 1,700