Common Stock and Other Equity Related Transactions - Additional Information (Detail) $ / shares in Units, $ in Millions		9 Months Ended
	Oct. 15, 2019	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2018 shares	Apr. 30, 2019 shares	Apr. 29, 2019 shares	Dec. 31, 2018 $ / shares shares	Oct. 26, 2018 USD ($) $ / shares
Class of Stock
Common stock, shares authorized (shares) | shares		400,000,000		400,000,000	200,000,000	200,000,000
Common stock, par value (usd per share) | $ / shares		$ 0.01				$ 0.01
OP units were exchanged for an equal number of shares of common stock (OP Units) | shares		995,550	175,436
ATM
Class of Stock
Common stock, par value (usd per share) | $ / shares							$ 0.01
Aggregate offering price | $							$ 200.0
Remaining authorized shares (shares) | $		$ 140.7
Subsequent Event
Class of Stock
Stock split ratio	2