Income Taxes Income Taxes (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income tax (expense) benefit	$ (421,000)	$ 5,416,000
Tax refund receivable	$ 25,300,000		$ 21,200,000