Leases
9 Months Ended
Sep. 27, 2019
Leases [Abstract]  
Leases
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:

 
Three Months Ended
 
Nine Months Ended
(In thousands)
 
September 27, 2019
 
September 27, 2019
Operating lease expense
 
$
3,827

 
$
10,890

Variable lease expense
 
196

 
594

Short-term lease expense
 
12,436

 
35,055

Total lease expense
 
$
16,459

 
$
46,539


Supplemental balance sheet information related to our operating leases is as follows:
(In thousands)
 
 
September 27, 2019
Right-of-use assets
 
 
$
18,233

 
 
 
 
Current lease liabilities (recorded in other accrued liabilities)
 
 
$
8,402

Long-term lease liabilities (recorded in other non-current liabilities)
 
 
10,683

Total operating lease liabilities
 
 
$
19,085


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 $7.1 million were recognized as non-cash asset additions during the nine months ended September 27, 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 September 27, 2019 were 4.1 years and 5.9%, respectively.
Maturities of lease liabilities at September 27, 2019 were as follows:
(In thousands)
 
 
2019 (excluding the nine months ended September 27, 2019)
 
$
3,832

2020
 
6,445

2021
 
3,315

2022
 
2,589

2023
 
1,426

2024 and beyond
 
4,537

    Total lease payments
 
22,144

Less: Imputed interest
 
3,059

   Total
 
$
19,085