Investment in Real Estate - Real Estate Acquired (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets acquired
Assets acquired	$ 265,129
Assets acquired		$ 142,255	$ 122,448
Other assets	0
Other assets		229	20
Total assets acquired	265,129
Total assets acquired		142,484	122,468
Liabilities assumed
Mortgage notes payable	9,200
Mortgage notes payable		5,900	22,010
Below-market lease liability	10,645
Below-market lease liability		0	0
Other liabilities	0
Other liabilities		32	2,214
Total liabilities assumed	19,845
Total liabilities assumed		5,932	24,224
Net assets acquired	245,284
Net assets acquired		136,552	98,244
Land
Assets acquired
Assets acquired	171,111
Assets acquired		82,539	62,489
Buildings and other depreciable property
Assets acquired
Assets acquired	84,019
Assets acquired		55,903	55,445
Manufactured homes
Assets acquired
Assets acquired	140
Assets acquired		840	67
In-place leases
Assets acquired
Assets acquired	$ 9,859
Assets acquired		$ 2,973	$ 4,447