Employee Benefit Plans (Pension Plan) (Details) (Pension Plan [Member], USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2006
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	$ 14,597,000	$ 12,529,000
Service cost	0	0	181,000
Interest cost	668,000	712,000	687,000
Net actuarial loss	758,000	1,970,000
Benefits paid	(681,000)	(614,000)
Benefit obligation at end of year	15,342,000	14,597,000	12,529,000
Change in Plan Assets
Fair value of plan assets at beginning of year	9,234,000	8,696,000
Actual return on plan assets	1,017,000	352,000
Employer contributions	2,800,000	800,000
Benefits paid	(681,000)	(614,000)
Fair value of plan assets at end of year	12,370,000	9,234,000	8,696,000
Funded Status at End of Year	(2,972,000)	(5,363,000)
Amounts Recognized in the Consolidated Balance Sheets
Other Liabilities	(2,972,000)	(5,363,000)
Amounts Recognized in Accumulated Other Comprehensive Income
Net actuarial loss	7,312,000	7,290,000
Net amount recognized	7,312,000	7,290,000
Weighted-Average Allocation of Plan Assets at End of Year
Weighted-average allocation of plan assets at end of year	100.00%	100.00%
Weighted-Average Plan Assumptions at End of Year
Discount rate	4.25%	4.75%
Expected long-term rate of return on plan assets	8.00%	8.00%
Rate of increase in compensation levels	5.50%	5.50%
Net Periodic Benefit Cost/(Income)
Service cost	0	0	181,000
Interest cost	668,000	712,000	687,000
Expected return on plan assets	(804,000)	(690,000)	(595,000)
Amortization of prior service cost	0	0	1,000
Amortization of net actuarial loss	524,000	411,000	367,000
Net periodic benefit cost	388,000	433,000	641,000
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net actuarial loss/(gain)	22,000	1,897,000	(262,000)
Amortization of prior service credit	0	0	(1,000)
Total recognized in other comprehensive loss/(income)	22,000	1,897,000	(263,000)
Total Recognized in Net Periodic Pension Cost and Other Comprehensive Loss	410,000	2,330,000	378,000
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	500,000
Prior service cost to be amortized from accumulated other comprehensive income/(loss) into net periodic benefit cost over the next year	0
Expected Future Employer Contributions to Benefit Plans
Expected contribution to benefit plan in 2013	0
Estimated Future Benefit Payments
Estimated benefit payments in 2013	700,000
Estimated benefit payments in 2014	800,000
Estimated benefit payments in 2015	800,000
Estimated benefit payments in 2016	900,000
Estimated benefit payments in 2017	800,000
Estimated benefit payments in 2018 through 2022	4,400,000
Estimated fair value [Member]
Change in Plan Assets
Fair value of plan assets at end of year	12,370,000	9,234,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	12,370,000	6,043,000
Significant Other Observable Inputs (Level 2) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	3,191,000
Equity securities [Member]
Weighted-Average Allocation of Plan Assets at End of Year
Weighted-average allocation of plan assets at end of year	62.00%	64.00%
Plan Assets Target Allocations
Target allocations for plan assets, minimum	50.00%
Target allocations for plan assets, maximum	60.00%
Equity securities [Member] | Estimated fair value [Member]
Change in Plan Assets
Fair value of plan assets at end of year	7,752,000	5,912,000
Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	7,752,000	5,912,000
Equity securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Debt securities [Member]
Weighted-Average Allocation of Plan Assets at End of Year
Weighted-average allocation of plan assets at end of year	36.00%	33.00%
Plan Assets Target Allocations
Target allocations for plan assets, minimum	40.00%
Target allocations for plan assets, maximum	50.00%
Debt securities [Member] | Estimated fair value [Member]
Change in Plan Assets
Fair value of plan assets at end of year	4,429,000	3,191,000
Debt securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	4,429,000	0
Debt securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	3,191,000
Other Defined Benefit Plan Assets [Member] | Estimated fair value [Member]
Change in Plan Assets
Fair value of plan assets at end of year	189,000	131,000
Other Defined Benefit Plan Assets [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	189,000	131,000
Other Defined Benefit Plan Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in Plan Assets
Fair value of plan assets at end of year	$ 0	$ 0
Cash and cash equivalents [Member]
Weighted-Average Allocation of Plan Assets at End of Year
Weighted-average allocation of plan assets at end of year	2.00%	1.00%
Fixed income funds [Member]
Weighted-Average Allocation of Plan Assets at End of Year
Weighted-average allocation of plan assets at end of year	0.00%	2.00%
Mutual funds [Member]
Weighted-Average Allocation of Plan Assets at End of Year
Weighted-average allocation of plan assets at end of year	98.50%