Basis of Presentation and Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax benefit	$ (2,981)	$ 34,517
Gain on dispositions of real estate	$ 291,473	53,195
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax benefit		37,388
Gain on dispositions of real estate		50,324
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax benefit		(2,871)
Gain on dispositions of real estate		$ 2,871