Stockholders' Equity (Accumulated Other Comprehensive (Loss) Income) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Accumulated Other Comprehensive (Loss) Income [Roll Forward]
Unrealized (Loss) Gain on Securities, beginning balance	$ 6,892
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	(288)
Unrealized (Loss) Gain on Securities, current period change, net of tax	(11,145)
Unrealized (Loss) Gain on Securities, ending balance	(4,541)
Unrecognized Net Pension and Postretirement Costs, beginning balance	(6,238)
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Net of Tax	172
Unrecognized Net Pension and Postretirement Costs, current period change, net of tax	2,062
Unrecognized Net Pension and Postretirement Costs, ending balance	(4,004)
Accumulated Comprehensive (Loss) Income, beginning balance	654
Other Comprehensive Income (Loss), Reclassification Adjustment in Net Income, Net of Tax	(288)
Other Comprehensive Income (Loss), Settlement and Curtailment Costs of Pension and Other Postretirement Benefit Plan Valuation, Net of Tax	172
Accumulated Comprehensive (Loss) Income, current period change, net of tax	(9,083)
Accumulated Comprehensive (Loss) Income, ending balance	$ (8,545)