Interest and Other Income, net - Schedule of Interest and Other Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest And Other Income [Abstract]
Interest income, net	$ 364	$ 1,072	$ 1,780	$ 4,190
Mark-to-market of investments in our deferred compensation plans	740	150	580	3,061
Preferred equity investment income				454
Total interest and other income, net	$ 1,104	$ 1,222	$ 2,360	$ 7,705