Income Taxes Unrecognized Tax Benefits (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Unrecognized tax benefits before impact of deductions for state taxes, excluding interest and penalties	$ 565	$ 2,130
Unrecognized tax benefits that would impact effective tax rate	13	109
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at December 31, 2012	2,316
Increase related to tax positions taken during a prior year, including interest	139
Reductions related to tax positions taken in a prior year, including interest	(1,920)
Balance at December 31, 2013	535
Accrued interest expense net of the benefit of tax deductions	13
Cumulative reduction in unrecognized tax benefits, due to lapsing of statutes of limitations	$ 171