Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income Tax Contingency [Line Items]
Valuation allowance	$ 2.0		$ 1.9
Increase (decrease) in valuation allowance from continuing operations	$ 0.1	$ 0
Effective income tax rate reconciliation including discontinued operations	31.10%	30.40%
Income tax expense at statutory rate	35.00%	35.00%
Effective income tax rate on continuing operations	31.20%	30.80%