Employee Benefit Plans (Other Postretirement Defined Benefit Plans) (Details) (Other Postretirement Defined Benefit Plans [Member], USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2006
Other Postretirement Defined Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Eligible age for grandfathering provision at plan amendment to freeze plan				40 years
Eligible vesting service period for grandfathering provision at plan amendment to freeze plan	10 years
Change in Benefit Obligation
Benefit obligation at beginning of year	$ 1,459,000	$ 1,670,000
Service cost	0	0	18,000
Interest cost	63,000	74,000	90,000
Net actuarial (gain)/loss	(84,000)	(224,000)
Plan participant contributions	79,000	80,000
Benefits paid	(140,000)	(141,000)
Benefit obligation at end of year	1,377,000	1,459,000	1,670,000
Change in Plan Assets
Employer contributions	61,000	61,000
Plan participant contributions	79,000	80,000
Benefits paid	(140,000)	(141,000)
Fair value of plan assets at end of year	0	0
Funded Status at End of Year	(1,377,000)	(1,459,000)
Amounts Recognized in the Consolidated Balance Sheets
Other Liabilities	1,377,000	1,459,000
Amounts Recognized in Accumulated Other Comprehensive Income
Net actuarial loss	86,000	169,000
Prior service cost	(21,000)	(25,000)
Net amount recognized	65,000	144,000
Weighted-Average Plan Assumptions at End of Year
Discount rate	4.25%	4.75%
Net Periodic Benefit Cost/(Income)
Service cost	0	0	18,000
Interest cost	63,000	74,000	90,000
Amortization of prior service cost	(4,000)	(4,000)	(4,000)
Amortization of net actuarial loss	0	0	22,000
Net periodic benefit cost	59,000	70,000	126,000
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net actuarial loss/(gain)	(84,000)	(223,000)	6,000
Amortization of prior service credit	4,000	4,000	4,000
Total recognized in other comprehensive loss/(income)	(80,000)	(219,000)	10,000
Total Recognized in Net Periodic Pension Cost and Other Comprehensive Loss	(21,000)	(149,000)	136,000
Amounts to be Amortized from Accumulated Other Comprehensive Income/(Loss) into Net Periodic Benefit Cost over Next Year
Net loss to be amortized from accumulated other comprehensive income/(loss) into net periodic benefit cost over the next year	2,900
Prior service credit to be amortized from accumulated other comprehensive income/(loss) into net periodic benefit cost over the next year	4,200
Expected Future Employer Contributions to Benefit Plans
Expected contribution to benefit plan	0
Estimated Future Benefit Payments
Estimated benefit payments in 2013	70,000
Estimated benefit payments in 2014	69,000
Estimated benefit payments in 2015	71,000
Estimated benefit payments in 2016	71,000
Estimated benefit payments in 2017	72,000
Estimated benefit payments in 2018 through 2022	$ 400,000