Interest and Other Income (Loss), net - Schedule Of Interest And Other Income (Loss), net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest And Other Income [Abstract]
Preferred equity investment income	$ 1,460		$ 4,299
Interest income	103	$ 177	533	$ 448
Mark-to-market of investments in our deferred compensation plans	736	(1,940)	197	(845)
Total interest and other income (loss), net	$ 2,299	$ (1,763)	$ 5,029	$ (397)