LEASES (Tables)

6 Months Ended

Jun. 30, 2019

LEASES [Abstract]

Schedule of Lease Assets and Liabilities, Weighted-Average Lease Term and Discount Rate

		June 30
in thousands	Classification on the Balance Sheet	2019
Assets
Operating lease right-of-use assets		$     435,672
Accumulated amortization		(16,776)
Total lease assets	Operating lease right-of-use assets, net	$     418,896
Liabilities
Current
Operating	Other current liabilities	$       31,357
Noncurrent
Operating	Operating lease liabilities	396,952
Total lease liabilities		$     428,309
Lease Term and Discount Rate
Weighted-average remaining lease term (years)
Operating leases		10.0
Weighted-average discount rate
Operating leases		4.4%

Components of Nonmineral Lease Expense

	Three Months Ended		Six Months Ended
	June 30		June 30
in thousands		2019		2019
Lease cost
Operating lease cost		$       14,167		$       28,294
Short-term lease cost 1		7,922		16,623
Variable lease cost		3,489		6,557
Sublease income		(807)		(1,418)
Total lease cost		$       24,771		$       50,056

¹ We have elected to recognize the cost of leases with an initial term of one month or less within our short-term lease cost.

Maturity Analysis on an Undiscounted Basis

	Operating
in thousands	Leases
Maturity of Lease Liabilities
2019 (remainder)	$       26,537
2020	49,740
2021	45,807
2022	40,760
2023	36,203
Thereafter	606,079
Total minimum lease payments	$     805,126
Less: Lease payments representing interest	376,817
Present value of future minimum lease payments	$     428,309
Less: Current obligations under leases	31,357
Long-term lease obligations	$     396,952

Future Minimum Operating Lease Payments

in thousands
Future Minimum Operating Lease Payments
2019	$       47,979
2020	43,540
2021	35,732
2022	27,463
2023	19,707
Thereafter	195,104
Total	$     369,525