Income Taxes Schedule of tax expense and the effective tax rate for our income from continuing operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income from continuing operations before income taxes	$ 16,817	$ 7,516
Provision for income taxes	$ 2,102	$ 690
Effective tax rate	12.50%	9.20%