Investment Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Investment Securities [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 4,904
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	491
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	18,353
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	218,205
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total	241,953
Held-to-Maturity Securities, Debt Maturities, Within One Year, Net Carrying Amount	544
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	866
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount	23,868
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount	198,225
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount, Total	223,503
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	4,995
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	500
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	18,381
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	218,700
Available-for-sale Securities, Debt Securities	242,576
Held-to-Maturity Securities, Debt Maturities Within One Year, Fair Value	562
Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value	870
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value	22,868
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value	192,325
Held-to-maturity Securities, Debt Maturities, Fair Value, Total	$ 216,625