Interest and Other Income, net - Schedule Of Interest And Other Income, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest And Other Income [Abstract]
Interest income, net	$ 1,741	$ 978	$ 3,118	$ 2,004
Mark-to-market of investments in our deferred compensation plans	842	199	2,911	290
Preferred equity investment income		917	454	1,816
Total interest and other income, net	$ 2,583	$ 2,094	$ 6,483	$ 4,110