Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Summary of Leases Table

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

	December 31,
	2021				2020
thousands except lease term and discount rate	Operating Leases		Finance Leases		Operating Leases		Finance Leases
Assets
Other assets	$	71,725	$	—	$	38,985	$	—
Net property, plant, and equipment	—		5,449		—		31,487
Total lease assets (1)	$	71,725	$	5,449	$	38,985	$	31,487
Liabilities
Accrued liabilities	$	10,558	$	—	$	3,958	$	—
Short-term debt	—		3,794		—		8,264
Other liabilities	35,442		—		34,843		—
Long-term debt	—		1,533		—		23,644
Total lease liabilities (1)	$	46,000	$	5,327	$	38,801	$	31,908
Weighted-average remaining lease term (years)	8		2		9		7
Weighted-average discount rate (%)	4.1		3.4		5.1		4.3

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(1)For the years ended December 31, 2021 and 2020, includes additions to ROU assets of $44.9 million and $40.5 million, respectively, and additions to lease liabilities of $14.9 million and $40.5 million, respectively, related to operating leases. Includes additions to ROU assets and lease liabilities of $0.9 million and $39.7 million related to finance leases for the years ended December 31, 2021 and 2020, respectively.

Summary of Lease Cost and Cash Flow Activity Tables

The following table summarizes the Partnership’s lease cost:

	Year Ended December 31,
thousands	2021		2020		2019
Operating lease cost	$	10,753	$	7,702	$	6,932
Short-term lease cost	37,616		43,102		1,295
Variable lease cost	2,628		(46)		256
Sublease income	(414)		(414)		(414)
Finance lease cost
Amortization of ROU assets	7,151		8,346		562
Interest on lease liabilities	861		1,516		137
Total lease cost	$	58,595	$	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,
	2021				2020				2019
thousands	Operating Leases		Finance Leases		Operating Leases		Finance Leases		Operating Leases		Finance Leases
Operating cash flows	$	5,805	$	861	$	5,750	$	1,516	$	7,042	$	118
Financing cash flows	—		6,513		—		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, 2021:

thousands	Operating Leases		Finance Leases
2022	$	10,725	$	3,857
2023	7,836		1,446
2024	5,214		137
2025	4,444		23
2026	4,450		—
Thereafter	22,896		—
Total lease payments	55,565		5,463
Less portion representing imputed interest	9,565		136
Total lease liabilities	$	46,000	$	5,327

Lessee, Finance Leases Maturity Table

The following table reconciles the undiscounted cash flows to the operating and finance lease liabilities at December 31, 2021:

thousands	Operating Leases		Finance Leases
2022	$	10,725	$	3,857
2023	7,836		1,446
2024	5,214		137
2025	4,444		23
2026	4,450		—
Thereafter	22,896		—
Total lease payments	55,565		5,463
Less portion representing imputed interest	9,565		136
Total lease liabilities	$	46,000	$	5,327