Shareholders' Equity - Common Stock, Distributions, Prospectus Supplement and Preferred Stock (Details)	12 Months Ended
	Dec. 31, 2018 vote shares	Dec. 31, 2017 shares	Nov. 09, 2017 USD ($)
Class of Stock [Line Items]
Number of votes per each share | vote	1
Common stock, voting rights	one vote per share
Stock split, conversion ratio	1.5
Minimum % of REIT taxable income to be paid as dividend annually	90.00%
Preferred stock, shares authorized	30,000,000	30,000,000
Preferred stock, shares outstanding (shares)	0	0
Prospectus Supplement
Class of Stock [Line Items]
Maximum common stock value authorized under prospectus supplement | $			$ 150,000,000
Shares sold (in shares)	0	0