Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Taxes
Income tax benefit (expense)	$ 2,190	$ (1,068)
Effective Income Tax Rate, Continuing Operations	10.50%	(1.20%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%