Leases (Tables)

3 Months Ended

Mar. 31, 2022

Leases [Abstract]

Components of Lease Expense

The following table presents components of lease expense for the three months ended March 31, 2022 and 2021:

	Three Months Ended March 31,
(in thousands)	2022		2021
Operating lease expense	$	4,157	$	3,718
Short-term lease expense(a)	14,444		21,125
	18,601		24,843
Less: Sublease income	190		170
Total lease expense	$	18,411	$	24,673

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(a)Short-term lease expense includes all leases with lease terms ranging from less than one month 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 March 31, 2022			As of December 31, 2021
Assets
Right-of-use assets	Other assets	$	57,453		$	53,462
Total lease assets		$	57,453		$	53,462
Liabilities
Current lease liabilities	Accrued expenses and other current liabilities	$	7,832		$	7,481
Long-term lease liabilities	Other long-term liabilities	53,925			50,057
Total lease liabilities		$	61,757		$	57,538
Weighted-average remaining lease term		11.8 years			12.0 years
Weighted-average discount rate		9.34		%	9.44		%

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

	Three Months Ended March 31,
(in thousands)	2022		2021
Operating cash flow information:
Cash paid for amounts included in the measurement of lease liabilities	$	(3,927)	$	(3,345)
Non-cash activity:
Right-of-use assets obtained in exchange for lease liabilities	$	6,757	$	2,338

Maturity of Operating Lease Liabilities on an Undiscounted Basis

The following table presents maturities of operating lease liabilities on an undiscounted basis as of March 31, 2022:

Year (in thousands)	Operating Leases
2022 (excluding the three months ended March 31, 2022)	$	9,955
2023	10,936
2024	8,462
2025	7,570
2026	6,405
Thereafter	65,120
Total lease payments	108,448
Less: Imputed interest	46,691
Total	$	61,757