Income Taxes (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Components of the deferred tax assets and deferred tax liabilities
Income tax benefit or expense	$ 45,017,000	$ 0	$ 47,495,000
Net deferred tax assets		0		0
Net deferred tax liabilities		0		0
Unrecognized tax benefits		0		0
M [X]
Components of the deferred tax assets and deferred tax liabilities
Income tax benefit or expense			$ 47,500,000