Balance Sheet Parenthetical (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Held-to-maturity Securities, at Fair Value	$ 325,930	$ 308,566
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	17,420,776	17,079,376
Unallocated ESOP Shares - Shares	55,275	71,748
Treasury Stock, Shares	4,423,072	4,386,001