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Goodwill and Other Intangible Assets - Aggregate Amortization Expense Relative to Existing Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Jun. 30, 2012
Acquired Finite-Lived Intangible Assets [Line Items]    
2013   $ 372
2014   283
2015   247
2016   210
2017   174
Thereafter   332
Net Carrying Value $ 1,517 $ 1,618