Preferred Stock and Units - Schedule of Series of Cumulative Redeemable Perpetual Preferred Stock (Parenthetical) (Detail) - $ / shares		3 Months Ended
Jul. 15, 2019	Sep. 30, 2019
8.25% Series D Cumulative Redeemable Perpetual Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred Stock, Quarterly Distributions Per Share	$ 0.41823	$ 0.515625

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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