Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Other Assets
Restricted investments	$ 1,158	$ 2,364
Accounts receivable, net	5,004	6,957
Homesite sales receivable	4,547	5,211	$ 2,691	$ 2,977
Notes receivable, net	3,239	3,252
Income tax receivable	3,841	2,843
Prepaid expenses	6,869	6,592
Straight line rent	3,112	3,292
Operating lease, right-of use assets	710	691
Other assets	6,630	5,715
Retained interest investments	12,348	12,214
Accrued interest receivable for Senior Notes held by SPE	935	2,938
Total other assets	$ 48,393	$ 52,069