Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Accounting Policies [Line Items]
Lease cancellation fees	$ 7,700	$ 2,000	$ 6,100
Deferred revenue	4,100	5,100
Advertising and marketing expense	$ 9,400	8,700	10,000
Number of reportable segments (segment) | segment	2
Public relations costs	$ 2,400	$ 2,300	$ 2,400
Remaining contractual payments under ground lease agreements	$ 62,802
Building and Building Improvements [Member]
Accounting Policies [Line Items]
Useful life	39 years
Corporate Equipment [Member] | Minimum [Member]
Accounting Policies [Line Items]
Useful life	3 years
Corporate Equipment [Member] | Maximum [Member]
Accounting Policies [Line Items]
Useful life	7 years