Leases (Tables)

9 Months Ended

Sep. 30, 2022

Leases [Abstract]

Components of Lease Expense

The following table presents components of lease expense for the three and nine months ended September 30, 2022 and 2021:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2022		2021		2022		2021
Operating lease expense	$	3,685	$	3,660	$	11,754	$	11,085
Short-term lease expense(a)	15,393		17,951		42,828		57,377
	19,078		21,611		54,582		68,462
Less: Sublease income	193		176		573		522
Total lease expense	$	18,885	$	21,435	$	54,009	$	67,940

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(a)Short-term lease expense includes all leases with lease terms of up to one year. Short-term leases include, among other things, construction equipment rented on an as-needed basis as well as temporary housing.

Supplemental Financial Statement Information Related to Leases

The following table presents supplemental balance sheet information related to operating leases:

(dollars in thousands)	Balance Sheet Line Item	As of September 30, 2022			As of December 31, 2021
Assets
Right-of-use assets	Other assets	$	61,693		$	53,462
Total lease assets		$	61,693		$	53,462
Liabilities
Current lease liabilities	Accrued expenses and other current liabilities	$	7,147		$	7,481
Long-term lease liabilities	Other long-term liabilities	59,352			50,057
Total lease liabilities		$	66,499		$	57,538
Weighted-average remaining lease term		11.6 years			12.0 years
Weighted-average discount rate		9.42		%	9.44		%

The following table presents supplemental cash flow information and non-cash activity related to operating leases:

	Nine Months Ended September 30,
(in thousands)	2022		2021
Operating cash flow information:
Cash paid for amounts included in the measurement of lease liabilities	$	(11,007)	$	(10,344)
Non-cash activity:
Right-of-use assets obtained in exchange for lease liabilities	$	16,305	$	6,686

Maturity of Operating Lease Liabilities on an Undiscounted Basis

The following table presents maturities of operating lease liabilities on an undiscounted basis as of September 30, 2022:

Year (in thousands)	Operating Leases
2022 (excluding the nine months ended September 30, 2022)	$	3,252
2023	12,344
2024	9,925
2025	9,023
2026	7,688
Thereafter	73,375
Total lease payments	115,607
Less: Imputed interest	49,108
Total	$	66,499