Fair Value Disclosures (Assets Measured at Fair Value on a Nonrecurring Basis) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 35,975,000	$ 54,216,000
Foreclosed assets	10,302,000	16,555,000
Total Impaired loans and Foreclosed assets	46,277,000	70,771,000
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	0	0
Foreclosed assets	0	0
Total Impaired loans and Foreclosed assets	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	0	0
Foreclosed assets	0	0
Total Impaired loans and Foreclosed assets	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	35,975,000	54,216,000
Foreclosed assets	10,302,000	16,555,000
Total Impaired loans and Foreclosed assets	$ 46,277,000	$ 70,771,000