Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Loss [Abstract]
Net unrealized gains on securities	$ 1,906	$ 1,427
Tax effect	(648)	(485)
Net of tax amount	1,258	942
Net unrealized losses on derivatives	(1,443)	(1,738)
Tax effect	490	590
Net of tax amount	(953)	(1,148)
Accumulated pension adjustment	(7,462)	(7,462)
Tax effect	2,537	2,537
Net of tax amount	(4,925)	(4,925)
Total other comprehensive loss	$ (4,620)	$ (5,131)