Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Summary of Leases Table

The following table summarizes information related to the Partnership’s leases:

	December 31,
	2020				2019
thousands except lease term and discount rate	Operating Leases		Finance Leases		Operating Leases		Finance Leases
Assets
Other assets	$	38,985	$	—	$	3,985	$	—
Net property, plant, and equipment	—		31,487		—		7,892
Total lease assets (1)	$	38,985	$	31,487	$	3,985	$	7,892
Liabilities
Accrued liabilities	$	3,958	$	—	$	1,805	$	—
Short-term debt	—		8,264		—		7,873
Other liabilities	34,843		—		3,035		—
Long-term debt	—		23,644		—		—
Total lease liabilities (1)	$	38,801	$	31,908	$	4,840	$	7,873
Weighted-average remaining lease term (years)	9		7		5		—
Weighted-average discount rate (%)	5.1		4.3		4.7		2.9

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(1)Includes additions to ROU assets and lease liabilities of $39.7 million and $8.5 million related to finance leases for the year ended December 31, 2020 and 2019, respectively. Includes additions to ROU assets and lease liabilities of $40.5 million related to operating leases for the year ended December 31, 2020.

Summary of Lease Cost and Cash Flow Activity Tables

The following table summarizes the Partnership’s lease cost:

	Year Ended December 31,
thousands	2020		2019
Operating lease cost	$	7,702	$	6,932
Short-term lease cost	43,102		1,295
Variable lease cost	(46)		256
Sublease income	(414)		(414)
Finance lease cost
Amortization of ROU assets	8,346		562
Interest on lease liabilities	1,516		137
Total lease cost	$	60,206	$	8,768

14. LEASES

The following table summarizes cash paid for amounts included in the measurement of lease liabilities:

	Year Ended December 31,
	2020				2019
thousands	Operating Leases		Finance Leases		Operating Leases		Finance Leases
Operating cash flows	$	5,750	$	1,516	$	7,042	$	118
Financing cash flows	—		14,207		—		508

Lessee, Operating Leases Maturity Tables

The following table reconciles the undiscounted cash flows to the operating and finance lease liabilities at December 31, 2020:

thousands	Operating Leases		Finance Leases
2021	$	4,042	$	8,557
2022	7,763		6,757
2023	4,902		4,383
2024	4,253		3,205
2025	4,101		3,095
Thereafter	25,415		10,752
Total lease payments	50,476		36,749
Less portion representing imputed interest	11,675		4,841
Total lease liabilities	$	38,801	$	31,908

Lessee, Finance Leases Maturity Table

The following table reconciles the undiscounted cash flows to the operating and finance lease liabilities at December 31, 2020:

thousands	Operating Leases		Finance Leases
2021	$	4,042	$	8,557
2022	7,763		6,757
2023	4,902		4,383
2024	4,253		3,205
2025	4,101		3,095
Thereafter	25,415		10,752
Total lease payments	50,476		36,749
Less portion representing imputed interest	11,675		4,841
Total lease liabilities	$	38,801	$	31,908

Lessor, Operating Leases Maturity Table

The following table presents the undiscounted cash flows expected to be received for all operating leases in effect as of December 31, 2020. This presentation includes minimum fixed lease payments and does not include an estimate of variable lease consideration.

thousands
2021	$	193,925
2022	—
2023	—
2024	—
2025	—
Thereafter	—
Total lease payments	$	193,925