Balance Sheet Parenthetical (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Held-to-maturity Securities, at Fair Value	$ 248,252	$ 159,059
Preferred Stock, Par Value	$ 5	$ 5
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares Issued	16,416,163	16,094,277
Unallocated ESOP Shares - Shares	102,890	117,502
Treasury Stock, Shares	4,288,617	4,213,470