Interest and Other Income, net - Schedule Of Interest And Other Income, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest And Other Income [Abstract]
Preferred equity investment income	$ 1,423		$ 2,839
Interest income	350	$ 150	430	$ 271
Mark-to-market of investments in our deferred compensation plans	(743)	362	(539)	1,095
Total interest and other income, net	$ 1,030	$ 512	$ 2,730	$ 1,366