Tax Treatment of Dividends of HTA (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Ordinary income	$ 0.6405	$ 0.6559	$ 0.7479
Return of capital	0.6045	0	0.3720
Capital gain	0	0.5691	0.0851
Total	$ 1.2450	$ 1.2250	$ 1.2050