Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Components of Lease Expense

	Three Months Ended		Nine Months Ended
(in thousands)	September 30, 2019		September 30, 2019
Operating lease expense	$	4,047	$	11,749
Short-term lease expense(a)		17,786		50,843
		21,833		62,592
Less: Sublease income		263		784
Total lease expense	$	21,570	$	61,808

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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 as of September 30, 2019:

		As of September 30,
(dollars in thousands)	Balance Sheet Line Item	2019
Assets
ROU assets	Other assets	$	41,186
Total lease assets		$	41,186
Liabilities
Current lease liabilities	Accrued expenses and other current liabilities	$	11,267
Long-term lease liabilities	Other long-term liabilities		33,027
Total lease liabilities		$	44,294
Weighted-average remaining lease term (in years)			5.1
Weighted-average discount rate			5.88%

The following table presents supplemental cash flow information and non-cash activity related to operating leases for the nine months ended September 30, 2019:

	Nine Months Ended
(in thousands)	September 30, 2019
Operating cash flow information:
Cash paid for amounts included in the measurement of lease liabilities	$	(11,586)
Non-cash activity:
ROU assets obtained in exchange for lease liabilities	$	7,621

Maturity of Leases Liabilities on an Undiscounted Basis

Year (in thousands)	Operating Leases
2019 (excluding the nine months ended September 30, 2019)	$	3,781
2020		12,339
2021		8,997
2022		7,695
2023		6,489
Thereafter		12,461
Total lease payments		51,762
Less: Imputed interest		7,468
Total	$	44,294

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