Schedule III - Summary of Company's Real Estate Assets (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Non-cash amounts	$ 4,623	$ 502
LAMAR MEDIA CORP [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Non-cash amounts	4,623	502
Advertising Display [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Non-cash amounts	379	2,698	$ 3,126
Advertising Display [Member] | LAMAR MEDIA CORP [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Non-cash amounts	$ 379	2,698	$ 3,126
Land Acquisition [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Non-cash amounts		200
Land Acquisition [Member] | LAMAR MEDIA CORP [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Non-cash amounts		$ 200