Securities (Held-to-maturity Securities, Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Amortized Cost
Due in 1 year or less	$ 0	$ 0
Due in 1 to 5 years	0	510
Due in 5 to 10 years	53,121	11,638
Due after 10 years	178,404	36,314
Total debt securities	231,525	48,462
Mortgage-backed securities	5,973	7,040
Total investment securities	237,498	55,502
Estimated Fair Value
Due in 1 year or less	0	0
Due in 1 to 5 years	0	510
Due in 5 to 10 years	55,019	11,638
Due after 10 years	176,567	36,314
Total debt securities	231,586	48,462
Mortgage-backed securities	5,851	7,520
Estimated fair value	$ 237,437	$ 55,982