Consolidated Statement Of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 68,769	$ (3,325)
Other comprehensive income (loss):
Net unrealized loss on derivative instruments	(6,340)
Comprehensive income (loss)	62,429	(3,325)
Comprehensive income (loss) attributable to noncontrolling interest in consolidated ventures	706	490
Comprehensive income (loss) attributable to common shareholders	$ 63,135	$ (2,835)