Right-of-use assets and lease liabilities consisted of the following (in thousands) as of:

	September 30, 2021		December 31, 2020
Assets
Operating lease right-of-use assets, net	$	444,073	$	274,562
Finance lease right-of-use assets, net (included in property, plant and equipment, net)		4,490		34,905
Total right-of-use assets	$	448,563	$	309,467
Liabilities
Current
Current portion of operating lease liabilities	$	94,651	$	61,625
Current portion of finance lease liabilities (included in current maturities of long-term debt)		1,444		12,178
Noncurrent
Noncurrent portion of operating lease liabilities		360,271		219,239
Noncurrent portion of finance lease liabilities (included in long-term debt, net of current maturities)		2,709		11,695
Total lease liabilities	$	459,075	$	304,737

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Operating lease costs (1)	$	33,820	$	21,300	$	99,292	$	64,293
Finance lease costs:
Amortization of finance lease right-of-use assets		397		1,548		1,787		4,704
Interest on finance lease liabilities		53		382		318		1,041
Variable lease costs		6,827		4,613		20,308		13,275
Total lease costs	$	41,097	$	27,843	$	121,705	$	83,313

Future maturities of lease liabilities as of September 30, 2021 were as follows (in thousands):

	Finance Leases			Operating Leases
2021 (from October 1, 2021)	$	409		$	29,490
2022		1,570			112,718
2023		1,337			95,739
2024		480			78,513
2025		257			56,062
Thereafter		438			167,888
Total lease payments		4,491			540,410
Less: amount representing interest		(338	)		(85,488	)
Present value of lease liabilities		4,153			454,922
Less: current portion		(1,444	)		(94,651	)
Long-term lease liabilities, net of current portion	$	2,709		$	360,271

	September 30, 2021		December 31, 2020
Weighted average remaining lease term (years)
Operating leases	6.4		6.3
Finance leases	3.6		2.1
Weighted average discount rate
Operating leases	5.4	%	6.3	%
Finance leases	4.4	%	5.9	%

The following table presents cash paid for amounts included in the measurement of lease liabilities (in thousands):

	Nine Months Ended September 30,
		2021		2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	90,858	$	62,185
Operating cash flows from finance leases		318		1,041
Financing cash flows from finance leases		27,565		9,961

Residual value guarantees in our lease agreements are not material. Our lease agreements do not impose any significant restrictions or covenants on us. As of September 30, 2021, we do not have any material leases that have been signed, but have not yet commenced. Leases with related parties are not significant as of September 30, 2021 nor for the three and nine months ended September 30, 2021 and 2020.

In addition to the operating and finance lease arrangements described above, the Company is party to 121 individual property lease agreements with a single lessor as of September 30, 2021. These lease agreements had initial terms ranging from nine to 15 years with renewal options in five-year increments providing for up to approximately 30-year total lease terms. A related agreement between the lessor and the Company gives the Company the right to acquire a limited number of the leased facilities at fair market value. These purchase rights represent a form of continuing involvement with these properties, which precluded sale-leaseback accounting. As a result, the Company treats all of the properties that it leases from this lessor as a financing arrangement.

We were deemed the owner of certain of our facilities during their construction period based on an evaluation made in accordance with the Leases topic of the Codification. Effectively, a sale and leaseback of these facilities occurred when construction was completed and the lease term began. These transactions did not qualify for sale-leaseback accounting. As a result, the Company treats the lease of these facilities as a financing arrangement.

As of September 30, 2021, other finance obligations consist of $203.5 million, with cash payments of $5.2 million and $15.9 million for the three and nine months ended September 30, 2021, respectively. These other finance obligations are included on the condensed consolidated balance sheet as part of long-term debt. The related assets are recorded as components of property, plant, and equipment on the condensed consolidated balance sheet.

Future minimum commitments for other finance obligations as of September 30, 2021 were as follows (in thousands):

2021 (from October 1, 2021)	$	4,236
2022		16,886
2023		16,893
2024		16,911
2025		16,911
Thereafter		174,344
Total	$	246,181