Subsequent Events (Details) - USD ($) $ in Thousands		9 Months Ended
	Oct. 03, 2017	Sep. 30, 2017	Sep. 30, 2016	Oct. 27, 2017
Subsequent Event [Line Items]
Proceeds from sales of equity method investments		$ 27,000	$ 0
Subsequent Event | Land in Dillon, South Carolina
Subsequent Event [Line Items]
Expected cost for build to suit investment				$ 47,300
Subsequent Event | Shelborne Operating Property Associates, LLC
Subsequent Event [Line Items]
Equity method investments percentage sold	4.60%
Proceeds from sales of equity method investments	$ 4,000