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Other Borrowings - Company's Borrowings (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Short Term    
Revolving line of credit $ 0 $ 25,000
FHLB advances 150,000 96,987
Other Long-term Debt, Current 0 58,182
Short-term Debt 150,000 180,169
Long Term    
Long-term Debt 0 210,094
FHLB [Member]    
Long Term    
Long-term Debt $ 0 $ 210,094