Balance Sheet Parenthetical (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Held-to-Maturity Securities, at Fair Value	$ 278,390	$ 248,252	$ 254,936
Preferred Stock, Par Value, in Dollars Per Share	$ 5	$ 5	$ 5
Preferred Stock, Shares Authorized, in Shares	1,000,000	1,000,000	1,000,000
Common Stock, Par Value, in Dollars Per Share	$ 1	$ 1	$ 1
Common Stock, Shares Authorized, in Shares	20,000,000	20,000,000	20,000,000
Common Stock, Shares Issued, in Shares	16,744,486	16,416,163	16,416,163
Unallocated ESOP Shares, in Shares	87,641	102,890	107,315
Treasury Stock, in Shares	4,327,741	4,288,617	4,274,972