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Cash and Cash Equivalents, Continuing Operations (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Cash And Cash Equivalents [Line Items]      
Cash and cash equivalents $ 44,844 $ 47,913 $ 73,397
Noninterest-bearing deposits
     
Cash And Cash Equivalents [Line Items]      
Cash and cash equivalents 2,925 3,020  
Taxable Money Market Funds
     
Cash And Cash Equivalents [Line Items]      
Cash and cash equivalents $ 41,919 $ 44,893