Deposits - Contractual Maturities of Time Deposits of $100,000 or More, Domestic (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Maturities Of Time Deposits [Abstract]
Time deposits, $100,000 or more, domestic, Three Months or Less	$ 3,890,000	$ 5,700,000
Time deposits, $100,000 or more, domestic, Over Three and Less than Six Months	2,279,000	3,040,000
Time deposits, $100,000 or more, domestic, Over Six and Less than Twelve Months	6,368,000	4,011,000
Time deposits, $100,000 or more, domestic, Over Twelve Months	8,992,000	9,498,000
Time deposits, $100,000 or more, domestic, Total	$ 21,529,000	$ 22,249,000