Goodwill and Intangible Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2023

Goodwill And Intangible Assets And Liabilities Disclosure [Abstract]

Schedule of Carrying Amount of Goodwill

Changes in the carrying amount of goodwill occurring during the three months ended March 31, 2023 are as follows:

(Thousands)	Fiber Infrastructure		Total
Goodwill at December 31, 2022	$	672,878	$	672,878
Accumulated impairment charges as of December 31, 2022	(311,500)		(311,500)
Balance at December 31, 2022	$	361,378	$	361,378
Goodwill at March 31, 2023	$	672,878	$	672,878
Accumulated impairment charges as of March 31, 2023	(311,500)		(311,500)
Balance at March 31, 2023	$	361,378	$	361,378

Schedule of Carrying Value of Other Intangible Assets

(Thousands)	March 31, 2023				December 31, 2022
	Original Cost		Accumulated Amortization		Original Cost		Accumulated Amortization
Finite life intangible assets:
Customer lists	$	416,104	$	(134,443)	$	416,104	$	(128,728)
Contracts	52,536		(16,417)		52,536		(14,776)
Underlying Rights	10,497		(875)		10,497		(787)
Total intangible assets	$	479,137			$	479,137
Less: accumulated amortization	(151,735)				(144,291)
Total intangible assets, net	$	327,402			$	334,846
Finite life intangible liabilities:
Below-market leases	$	191,154	(26,736)		$	191,154	(24,062)
Finite life intangible liabilities:
Below-market leases	$	191,154			$	191,154
Less: accumulated amortization	(26,736)				(24,062)
Total intangible liabilities, net	$	164,418			$	167,092