Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements used to Value Asset (Detail)

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Fair Value Measurements used to Value Asset (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Fair Value Measurements [Line Items]  
Long-Lived Asset Held for Sale $ 2,900
Significant Unobservable Inputs (Level 3)
 
Fair Value Measurements [Line Items]  
Long-Lived Asset Held for Sale 2,900
Total Gains (Losses)
 
Fair Value Measurements [Line Items]  
Long-Lived Asset Held for Sale $ 5,608