Employee Benefit Plans (Changes in Fair Value of Assets and Statement of Funded Status) (Details) (USD $)						12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 Pension benefits	Dec. 31, 2011 Pension benefits	Dec. 31, 2012 Other Postretirement Benefit Plans, Defined Benefit [Member]	Dec. 31, 2011 Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued Investment Income Receivable						$ 22,000	$ 13,000
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	9,596,000	9,899,000				10,409,000	12,543,000	0	0
Defined Benefit Plan, Actual Return on Plan Assets						1,271,000	(239,000)	0	0
Defined Benefit Plan, Contributions by Employer						0	0	32,000	30,000
Defined Benefit Plan, Contributions by Plan Participants						0	0	54,000	73,000
Defined Benefit Plan, Benefits Paid						(169,000)	(205,000)	(86,000)	(103,000)
Defined Benefit Plan, Settlements, Benefit Obligation						(1,492,000)	(1,690,000)	0	0
Ending balance, after settlements	9,596,000	9,899,000				10,019,000	10,409,000	0	0
Defined Benefit Plan, Funded Status of Plan						(7,287,000)	(6,096,000)	(244,000)	(224,000)
Pension and Other Postretirement Defined Benefit Plans, Liabilities						(7,287,000)	(6,096,000)	(244,000)	(224,000)
Defined Benefit Plan, Amounts Recognized in Balance Sheet						(7,287,000)	(6,096,000)	(244,000)	(224,000)
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Prior Service Cost Credit, after Tax						0	0	2,000	3,000
Pension and Other Postretirement Benefit Plans, Accumulated Othe Comprehensive Income (Loss), Net Gains (Losses), Net of Tax						6,260,000	6,032,000	15,000	42,000
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	$ (6,238,000)	$ (6,027,000)		$ (2,415,000)	$ (3,581,000)	$ 6,260,000	$ 6,032,000	$ 17,000	$ 45,000
Discount rate			5.10%			3.30%	4.00%	3.30%	4.00%