v3.19.3.a.u2

Non-Controlling Interests - Schedule of OP Units Exchanged for Shares of Common Stock (Detail) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Minority Interest [Line Items] |  |
OP Units exchanged | 8 | 37
Common Stock |  |
Minority Interest [Line Items] |  |
Shares of common stock received | 8 | 37
Additional Paid-in Capital |  |
Minority Interest [Line Items] |  |
Value of shares/units exchanged | $ 684 | $ 2,986

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