Real Estate Pro Forma Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Real Estate [Line Items]
Total revenue	$ 98,947	$ 98,362	$ 84,113	$ 85,319	$ 82,605	$ 82,507	$ 85,023	$ 80,732	$ 366,741	$ 330,867	$ 314,983
Operating Expenses									253,056	251,332	221,337
Operating income (loss)	29,993	30,384	24,487	28,821	22,091	27,275	17,249	12,920	113,685	79,535	93,646
Net income	$ 16,485	$ 16,519	$ 11,941	$ 15,243	$ 9,209	$ 14,271	$ 4,413	$ (691)	60,188	27,202	$ 40,132
Pro Forma
Real Estate [Line Items]
Total revenue									383,125	365,326
Operating Expenses									264,107	281,253
Operating income (loss)									119,018	84,073
Net income									$ 64,278	$ 30,662