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Business Combinations, Asset Acquisitions and Dispositions - Additional Information (Details) - USD ($) $ in Thousands					6 Months Ended
	May 23, 2019	Apr. 02, 2019	Mar. 25, 2019	Oct. 19, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Sale of portfolio, cash consideration	$ 30,700
Sale of portfolio, pre-tax gain	$ 5,000
Cash paid for business acquisition						$ 1,154
Goodwill					$ 692,833		$ 692,385
Reduction of purchase price and goodwill					$ (1,269)
JKM Consulting Inc.
Business Acquisition [Line Items]
Business acquisition date					Mar. 25, 2019
Percentage of equity acquired			100.00%
Cash paid for business acquisition			$ 5,500
Goodwill			$ 1,700
Information Transport Solutions, Inc.
Business Acquisition [Line Items]
Business acquisition date					Oct. 19, 2018
Percentage of equity acquired				100.00%
Cash paid for business acquisition				$ 58,300
Goodwill				9,941
Reduction of purchase price and goodwill					$ (1,300)
Finite-lived intangible assets acquired				30,254
Information Transport Solutions, Inc. \| Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired				$ 30,300
Acquired finite-lived intangible assets, weighted average useful life				14 years
Uniti Towers Business \| Latin American
Business Acquisition [Line Items]
Sale of portfolio, cash consideration		$ 101,600
Sale of portfolio, pre-tax gain		$ 23,800