Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Activity in Real Estate Facilities

Activity in real estate facilities during the years ended December 31, 2021 and 2020 is as follows:

	2021		2020
	(In thousands)
Operating facilities, at cost:
Beginning balance	$	5,706,760	$	3,729,589
Capital expenditures	304,886		346,027
Acquisitions	383,600		1,662,650
Purchase price allocation adjustments	(198,541)		—
Disposition	(3,691)		(62,225)
Impairment	(1,700)		(2,153)
Conversion of leased assets to owned	—		7,956
Impact of foreign exchange rate changes	(56,612)		24,916
Ending balance	6,134,702		5,706,760
Accumulated depreciation:
Beginning balance	(1,080,922)		(936,422)
Depreciation expense	(201,497)		(146,237)
Dispositions	1,259		8,731
Impact of foreign exchange rate changes	3,986		(6,994)
Ending balance	(1,277,174)		(1,080,922)
Total real estate facilities	$	4,857,528	$	4,625,838
Non-real estate assets	372,101		269,668
Total property, buildings and equipment and finance leases, net	$	5,229,629	$	4,895,506

Summary of Activity of Allowance for Doubtful Accounts

The following table provides a summary of activity of the allowance for doubtful accounts (in thousands):

	Balance at beginning of year		Charged to expense/against revenue	Amounts written off, net of recoveries	Balance at end of year
Year ended December 31, 2019	$	5,706	3,608	(2,387)	$	6,927
Year ended December 31, 2020	$	6,927	7,161	(1,802)	$	12,286
Year ended December 31, 2021	$	12,286	7,186	(717)	$	18,755