Interest and Other Income, net - Schedule Of Interest And Other Income, net (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Interest And Other Income [Abstract]
Preferred equity investment income	$ 1,413	$ 1,416
Interest and other income	85	80
Mark-to-market of investments in our deferred compensation plans	1,702	204
Total interest and other income, net	$ 3,200	$ 1,700

The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration