Annual report pursuant to Section 13 and 15(d)

Investment Securities - Summary of Investment Securities Held to Maturity (Detail)

v2.4.0.6
Investment Securities - Summary of Investment Securities Held to Maturity (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]  
Amortized Cost $ 59,742
Gross Unrealized Gain 219
Gross Unrealized Loss 598
Estimated Fair Value 59,363
Municipal Bonds-Tax Exempt [Member]
 
Schedule of Held-to-maturity Securities [Line Items]  
Amortized Cost 9,815
Gross Unrealized Gain 98
Gross Unrealized Loss 46
Estimated Fair Value 9,867
Municipal Bonds-Taxable [Member]
 
Schedule of Held-to-maturity Securities [Line Items]  
Amortized Cost 38,797
Gross Unrealized Gain 117
Gross Unrealized Loss 522
Estimated Fair Value 38,392
Mortgage-Backed Securities [Member]
 
Schedule of Held-to-maturity Securities [Line Items]  
Amortized Cost 3,137
Gross Unrealized Gain 2
Gross Unrealized Loss 11
Estimated Fair Value 3,128
U.S. Government Agency Securities [Member]
 
Schedule of Held-to-maturity Securities [Line Items]  
Amortized Cost 7,993
Gross Unrealized Gain 2
Gross Unrealized Loss 19
Estimated Fair Value $ 7,976