Segments Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Gross real estate investments	$ 1,541,892	$ 1,477,565
Accumulated depreciation	(593,609)	(583,307)
Total real estate investments, net	948,283	894,258
Cash and cash equivalents	82,865	26,643
Total assets	1,061,774	937,151
Notes payable, net of deferred financing costs	518,353	438,895
Operating Segments [Member] | Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Gross real estate investments	1,525,220	1,460,967
Accumulated depreciation	(587,285)	(577,392)
Total real estate investments, net	937,935	883,575
Cash and cash equivalents	81,202	24,412
Total assets	1,049,274	923,747
Notes payable, net of deferred financing costs	518,353	438,895
Operating Segments [Member] | Restaurant Operations [Member]
Segment Reporting Information [Line Items]
Gross real estate investments	16,672	16,598
Accumulated depreciation	(6,324)	(5,915)
Total real estate investments, net	10,348	10,683
Cash and cash equivalents	1,663	2,231
Total assets	12,500	13,404
Notes payable, net of deferred financing costs	$ 0	$ 0