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Cash and Cash Equivalents, Continuing Operations (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Cash And Cash Equivalents [Line Items]      
Noninterest-bearing deposits $ 32,981 $ 17,332  
Short-term money market funds 38,386 33,373  
Loan servicing trust accounts   189  
Total cash and cash equivalents $ 71,367 $ 50,894 $ 47,569