LEASES (Tables)

3 Months Ended

Mar. 31, 2019

LEASES [Abstract]

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

		March 31
in thousands	Classification on the Balance Sheet	2019
Assets
Operating lease right-of-use assets		$     434,970
Accumulated amortization		(8,589)
Total lease assets	Operating lease right-of-use assets, net	$     426,381
Liabilities
Current
Operating	Other current liabilities	$       31,255
Noncurrent
Operating	Operating lease liabilities	403,426
Total lease liabilities		$     434,681
Lease Term and Discount Rate
Weighted-average remaining lease term (years)
Operating leases		10.3
Weighted-average discount rate
Operating leases		4.4%

Components of Nonmineral Lease Expense

	Three Months Ended
	March 31
in thousands		2019
Lease cost
Operating lease cost		$       14,127
Short-term lease cost 1		8,700
Variable lease cost		3,068
Sublease income		(610)
Total lease cost		$       25,285

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)	$       39,281
2020	49,300
2021	45,607
2022	40,680
2023	36,143
Thereafter	605,516
Total minimum lease payments	$     816,527
Less: Lease payments representing interest	381,846
Present value of future minimum lease payments	$     434,681
Less:  Current obligations under leases	31,255
Long-term lease obligations	$     403,426

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