Accumulated Other Comprehensive Loss (Details Textual) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Loss (Textual) [Abstract]
Net unrealized gains (losses) on investment securities-available-for-sale, tax expense (benefit)	$ (1,335)	$ 2,301	$ 1,796
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax Benefit	$ 9,714	$ 19,058	$ 15,435