v2.4.0.6
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Available-for-sale, amortized cost  
Due in one year or less $ 610
Due after one year through five years 51,409
Due after five years through ten years 60,454
Due after ten years 1,060
U.S. Government agency mortgage-backed 181,429
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total 294,962
Available-for-sale, fair value  
Due in one year or less 616
Due after one year through five years 52,076
Due after five years through ten years 61,071
Due after ten years 1,060
U.S. Government agency mortgage-backed 187,721
Available-for-sale Securities, Debt Securities, Total 302,544
Held-to-maturity, amortized cost  
Due in one year or less 3,353
Due after one year through five years 29,592
Due after five years through ten years 19,444
Due after ten years 5,925
U.S. Government agency mortgage-backed 0
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount, Total 58,314
Held-to-maturity, fair value  
Due in one year or less 3,368
Due after one year through five years 30,780
Due after five years through ten years 20,302
Due after ten years 5,925
U.S. Government agency mortgage-backed 0
Held-to-maturity Securities, Debt Maturities, Fair Value, Total $ 60,375