Common Stock and Other Equity Related Transactions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Apr. 13, 2018	Mar. 31, 2018
Class of Stock [Line Items]
OP units were exchanged for an equal number of shares of common stock		6,838
Private Placement
Class of Stock [Line Items]
Common stock, available for issuance		$ 150.0
Subsequent Event
Class of Stock [Line Items]
Common stock, dividends paid (usd per share)	$ 0.550