Intangible Assets and Above-market Leases (Tables)

12 Months Ended

Dec. 31, 2019

Finite-Lived Intangible Assets [Line Items]

Intangible Assets

The following is a summary of the Company's intangible assets.

	As of December 31, 2019							As of December 31, 2018
	Gross Carrying Value		Accumulated Amortization			Net Book Value		Gross Carrying Value		Accumulated Amortization			Net Book Value
Site rental contracts and tenant relationships	$	2,102,864	$	(1,426,466	)	$	676,398	$	2,102,864	$	(1,312,890	)	$	789,974
Other intangible assets	12,336		(9,778		)	2,558		51,102		(32,749		)	18,353
Total	$	2,115,200	$	(1,436,244	)	$	678,956	$	2,153,966	$	(1,345,639	)	$	808,327

Schedule of Estimated Annual Amortization Expense

Amortization expense related to intangible assets is classified as follows on the Company's consolidated statement of operations:

	For Years Ended December 31,
	2019		2018		2017
Depreciation, amortization and accretion	$	113,682	$	113,655	$	113,635
Site rental costs of operations	—		1,514		1,591
Total amortization expense	$	113,682	$	115,169	$	115,226

Site Rental Contracts and Tenant Relationships [Member]

Finite-Lived Intangible Assets [Line Items]

Schedule of Estimated Annual Amortization Expense

The estimated annual amortization expense related to intangible assets for the years ending December 31, 2020 to 2024 is as follows:

	Years Ending December 31,
	2020		2021		2022		2023		2024
Estimated annual amortization	$	113,682	$	113,682	$	113,682	$	113,682	$	77,526

Above Market Leases [Member]

Finite-Lived Intangible Assets [Line Items]

Intangible Assets

	Years Ending December 31,
	2020		2021		2022		2023		2024
Estimated annual amortization	$	113,682	$	113,682	$	113,682	$	113,682	$	77,526

Schedule of Estimated Annual Amortization Expense

	Years Ending December 31,
	2020		2021		2022		2023		2024
Estimated annual amortization	$	113,682	$	113,682	$	113,682	$	113,682	$	77,526