Changes in Accumulated Other Comprehensive Income Balances (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 7,899
Other comprehensive income (loss):
Change in net actuarial loss	2,268	37	(1,468)
Tax effect on change in net actuarial loss	(794)	(13)	514
Unrealized holding gains arising during the period	22,094	4,388	191
Tax effect on unrealized gains arising during the period	(7,733)	(1,536)	(67)
Reclassification adjustment for gains included in net income (loss)	(10,540)	(2,189)	(3,633)
Tax effect on reclassification adjustment for gains included in net income (loss)	3,689	766	1,272
Other comprehensive income (loss), net of tax	8,984	1,453	(3,191)
Ending Balance	16,883	7,899
Pension Liability [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(2,954)	(2,978)	(2,024)
Other comprehensive income (loss):
Change in net actuarial loss	2,268	37	(1,468)
Tax effect on change in net actuarial loss	(794)	(13)	514
Other comprehensive income (loss), net of tax	1,474	24	(954)
Ending Balance	(1,480)	(2,954)	(2,978)
Unrealized Gains (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	10,853	9,424	11,661
Other comprehensive income (loss):
Unrealized holding gains arising during the period	22,094	4,388	191
Tax effect on unrealized gains arising during the period	(7,733)	(1,536)	(67)
Reclassification adjustment for gains included in net income (loss)	(10,540)	(2,189)	(3,633)
Tax effect on reclassification adjustment for gains included in net income (loss)	3,689	766	1,272
Other comprehensive income (loss), net of tax	7,510	1,429	(2,237)
Ending Balance	18,363	10,853	9,424
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	7,899	6,446	9,637
Other comprehensive income (loss):
Change in net actuarial loss	2,268	37	(1,468)
Tax effect on change in net actuarial loss	(794)	(13)	514
Unrealized holding gains arising during the period	22,094	4,388	191
Tax effect on unrealized gains arising during the period	(7,733)	(1,536)	(67)
Reclassification adjustment for gains included in net income (loss)	(10,540)	(2,189)	(3,633)
Tax effect on reclassification adjustment for gains included in net income (loss)	3,689	766	1,272
Other comprehensive income (loss), net of tax	8,984	1,453	(3,191)
Ending Balance	16,883	7,899	6,446
Parent Company [Member]
Other comprehensive income (loss):
Ending Balance	$ 16,883	$ 7,899