LEASES (Tables)

6 Months Ended

Jun. 30, 2020

LEASES

Schedule of lease expense

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
	(in thousands)
Operating lease costs	$	2,052	$	2,356	$	4,218	$	4,515
Finance lease costs:
Amortization of assets		4,784		2,959		9,507		5,650
Interest on lease liabilities		763		603		1,553		1,149
Total finance lease costs		5,547		3,562		11,060		6,799
Variable and short-term lease costs		284		212		411		773
Total lease costs	$	7,883	$	6,130	$	15,689	$	12,087

Schedule of supplemental balance sheet information

	June 30, 2020			December 31, 2019
Operating leases:	(dollars in thousands)
Operating lease right-of-use assets	$	7,866		$	11,775
Current operating lease obligations		3,028			6,050
Long-term operating lease obligations		4,966			5,812
Total operating lease liabilities	$	7,994		$	11,862
Finance leases:
Property and equipment, at cost		121,889			120,236
Accumulated amortization		(35,990)			(30,990)
Property and equipment, net	$	85,899		$	89,246
Current finance lease obligations		25,928			30,779
Long-term finance lease obligations		60,363			58,397
	$	86,291		$	89,176
Weighted average remaining lease term:		(in months)			(in months)
Operating leases		52			45
Finance leases		42			44
Weighted average discount rate:
Operating leases		4.00	%		4.03	%
Finance leases		3.50	%		3.34	%

Schedule of supplemental cash flow and other information

	June 30, 2020		June 30, 2019
Cash paid for amounts included in measurement of liabilities:	(in thousands)
Operating cash flows from operating leases	$	42	$	3,885
Operating cash flows from finance leases		1,553		1,149
Financing cash flows from finance leases		11,366		6,375
ROU assets obtained in exchange for lease liabilities:
Operating leases		—		931
Finance leases		8,481		16,303