Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Loss [Abstract]
Net unrealized gains on securities	$ 2,720	$ 2,542
Tax effect	(925)	(864)
Net of tax amount	1,795	1,678
Net unrealized losses on derivatives	(921)	(1,103)
Tax effect	313	375
Net of tax amount	(608)	(728)
Accumulated pension adjustment	(7,576)	(7,576)
Tax effect	2,576	2,576
Net of tax amount	(5,000)	(5,000)
Total accumulated other comprehensive loss	$ (3,813)	$ (4,050)