Income Tax Valuation Allowance (Details6) (USD $) In Millions, unless otherwise specified				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Federal [Member]	Dec. 31, 2013 State [Member]
Valuation Allowance [Line Items]
Valuation allowance for deferred tax assets	$ 33.9	$ 24.8
Tax credit valuation allowance			2.3	10.3
Net operating loss valuation allowance				18.6
Temporary tax differences valuation allowance				2.7
Operating loss carryforward period				20 years
Maximum tax benefit available per yea amount				$ 4
Maximum tax benefit available per year percent of income				25.00%