Employee Benefit Plans (Narrative) (Details) (Defined Benefit Pension)	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Defined Benefit Pension
Defined Benefit Plan Disclosure [Line Items]
Assumed discount rate (percent)	4.00%	4.75%
Expected long-term rate of return on plan assets (percent)	7.25%	7.50%
Assumed rate of salary increases (percent)	4.00%	4.00%