Leases (Tables)

3 Months Ended

Mar. 31, 2022

The components of lease expense were as follows for the periods presented (in thousands):


		Three Months Ended
	Classification	March 31, 2022		March 31, 2021
Operating lease cost: (1)
Real estate lease expense	Property operating expenses	$	5,816	$	5,358
Non-real estate investment lease expense	General and administrative expenses	978		1,185
Finance lease cost:
Amortization of leased assets	Property operating expenses	1,156		2,035
Interest on lease liabilities	Interest expense	1,618		1,663
Sublease income	Rental income	(2,715)		(1,043)
Total		$	6,853	$	9,198

(1) Includes short-term leases, which are immaterial.

Supplemental balance sheet information related to leases is as follows (in thousands):


	Classification	March 31, 2022		December 31, 2021
Right of use assets:
Operating leases - real estate	Right of use assets, net	$	370,740	$	367,068
Finance leases - real estate	Right of use assets, net	33,949		155,728
Real estate right of use assets, net		404,689		522,796
Operating leases - non-real estate investments	Receivables and other assets	9,430		9,627
Finance leases - held for sale (1)	Real property held for sale, net of accumulated depreciation	119,733		—
Total right of use assets, net		$	533,852	$	532,423

Lease liabilities:
Operating leases		$	438,175	$	434,261
Financing leases		110,824		111,683
Total		$	548,999	$	545,944

(1) At March 31, 2022 finance leases at seven properties were classified as held for sale.