Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Components of Lease Expense

	Year Ended
(in thousands)	December 31, 2019
Operating lease expense	$	15,854
Short-term lease expense(a)		72,562
		88,416
Less: Sublease income		1,077
Total lease expense	$	87,339

(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 as of December 31, 2019:

		As of December 31,
(dollars in thousands)	Balance Sheet Line Item	2019
Assets
ROU assets	Other assets	$	40,156
Total lease assets		$	40,156
Liabilities
Current lease liabilities	Accrued expenses and other current liabilities	$	11,392
Long-term lease liabilities	Other long-term liabilities		31,900
Total lease liabilities		$	43,292
Weighted-average remaining lease term (in years)			5.0
Weighted-average discount rate			5.96%

The following table presents supplemental cash flow information and non-cash activity related to operating leases for the year ended December 31, 2019:

	Year Ended
(in thousands)	December 31, 2019
Operating cash flow information:
Cash paid for amounts included in the measurement of lease liabilities	$	(15,658)
Non-cash activity:
ROU assets obtained in exchange for lease liabilities	$	9,784

Maturity of Leases Liabilities on an Undiscounted Basis

Year (in thousands)	Operating Leases
2020	$	13,572
2021		9,372
2022		7,971
2023		6,761
2024		5,093
Thereafter		7,618
Total lease payments		50,387
Less: Imputed interest		7,095
Total	$	43,292

Future Minimum Rent Payments under Non-Cancelable Operating Leases

Year (in thousands)	Operating Leases
2019	$	14,039
2020		10,706
2021		7,464
2022		6,567
2023		5,587
Thereafter		11,662
		56,025
Less: Sublease rental agreements		1,398
Total	$	54,627