Leases
 12 Months Ended
Dec. 31, 2019
Leases [Abstract]  
Leases and Rentals
LEASES
We determine whether an arrangement contains a lease at inception. We have operating leases for office space, apartments, vehicles, and machinery and equipment. Our operating leases have lease terms of less than one year to ten years.
We do not separate lease components from non-lease components (e.g., common area maintenance, property taxes, and insurance) but account for both components in a contract as a single lease component.
The components of lease expense are as follows:


Year Ended
(In thousands)

December 31, 2019
Operating lease expense

$
14,747

Variable lease expense

713

Short-term lease expense

46,060

Total lease expense

$
61,520


Supplemental balance sheet information related to our operating leases is as follows:


Year Ended
(In thousands)

December 31, 2019
Right-of-use assets

$
14,654




Current lease liabilities (recorded in other accrued liabilities)

$
5,743

Long-term lease liabilities (recorded in other non-current liabilities)

9,811

Total operating lease liabilities

$
15,554


Initial ROU assets of $19.2 million were recognized as non-cash asset additions when the new lease accounting standard was adopted on January 1, 2019. Additional ROU assets from operating lease arrangements of $7.2 million were recognized as non-cash asset additions during the year ended December 31, 2019, and; ROU assets of $1.9 million were recognized with the Advantor acquisition.
The weighted average remaining lease term and discount rate for our operating leases at December 31, 2019 were 4.5 years and 6.2%, respectively.
Maturities of lease liabilities at December 31, 2019 were as follows:
(In thousands)

Payments due
2020

$
6,474

2021

3,343

2022

2,612

2023

1,426

2024

1,030

2024 and later
 
3,507

Total minimum lease payments

$
18,392