Quarterly report pursuant to sections 13 or 15(d)

Estimate Amortization Expense for Next Three Years (Detail)

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Estimate Amortization Expense for Next Three Years (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Finite-Lived Intangible Assets [Line Items]  
2013 $ 701
2014 701
2015 553
2016 466
2017 449
Future 2,129
Finite-Lived Intangible Assets, Net $ 4,999