Schedule III - Reconciliation of Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule III, Real Estate, Federal Income Tax Basis	$ 1,500,000
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance, Beginning of Year	1,188,766	$ 930,462
Acquisition of Investment in Real Estate	356,336	235,948
Construction Costs and Improvements	31,565	22,841
Disposition of Investment in Real Estate	(24,331)	0
Write-off of Fully Depreciated Assets	(207)	(485)
Balance, End of Year	1,551,841
Balance, Beginning of Year	(103,623)	(76,884)
Depreciation of Investment in Real Estate	(34,779)	(27,224)
Disposition of Investment in Real Estate	3,055	0
Write-off of Fully Depreciated Assets	207	485
Balance, End of Year	$ (135,140)	(103,623)	$ (76,884)
Predecessor
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance, Beginning of Year		930,462	555,433
Acquisition of Investment in Real Estate			375,422
Construction Costs and Improvements			14,485
Disposition of Investment in Real Estate			(14,816)
Write-off of Fully Depreciated Assets			(62)
Balance, Beginning of Year		$ (76,884)	(60,898)
Depreciation of Investment in Real Estate			(18,042)
Disposition of Investment in Real Estate			1,994
Write-off of Fully Depreciated Assets			62
Balance, End of Year			$ (76,884)