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Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and other intangible assets consisted of the following (amounts in thousands):


	At December 31, 2022						At December 31, 2021
	Gross Book Value		Accumulated Amortization		Net Book Value		Gross Book Value		Accumulated Amortization		Net Book Value
Goodwill	$	165,843	$	—	$	165,843	$	165,843	$	—	$	165,843
Shurgard® Trade Name	18,824		—		18,824		18,824		—		18,824
Finite-lived intangible assets, subject to amortization	201,668		(153,818)		47,850		198,180		(79,953)		118,227
Total goodwill and other intangible assets	$	386,335	$	(153,818)	$	232,517	$	382,847	$	(79,953)	$	302,894

Finite-lived intangible assets consist primarily of acquired customers in place. Amortization expense related to intangible assets subject to amortization was $95.2 million, $76.6 million and $16.1 million in 2022, 2021, and 2020, respectively. During 2022, 2021, and 2020, intangibles increased $24.8 million, $174.9 million, and $14.9 million, respectively, in connection with the acquisition of real estate facilities (Note 3).

The remaining amortization expense will be recognized over a weighted average life of approximately 1.3 years. The estimated future amortization expense for our finite-lived intangible assets at December 31, 2022 is as follows (amounts in thousands):


Year	Amount
2023	$	36,852
2024	5,746
Thereafter	5,252
Total	$	47,850