Income Taxes Components of Deferred Tax Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets, Gross [Abstract]
Net operating loss carryforwards - Federal	$ 608,631,000	$ 476,228,000
Net operating loss carryforwards - State	111,624,000	83,242,000
Capital Gains	77,182,000	81,388,000
Share-based compensation expense	24,089,000	5,679,000
Other	31,191,000	17,864,000
Deferred Tax Assets, Total	852,717,000	664,401,000
Deferred Tax Liabilities [Abstract]
Investment in limited partnerships	(109,884,000)	(94,434,000)
Other	(142,000)	(307,000)
Deferred Tax Liabilities, Total	(110,026,000)	(94,741,000)
Net deferred tax assets	742,691,000	569,660,000
Less: net deferred tax asset valuation allowance	(742,691,000)	(569,402,000)
Deferred Tax Assets, Net	0	258,000
Valuation Allowance [Abstract]
Change in deferred tax asset valuation allowance	173,000,000
Change in Valuation Allowance from continuing operations	190,500,000
Change in Valuation Allowance related to OCI	11,400,000
Change in Valuation Allowance due to prior period Adjustment	$ 6,100,000