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Leases (Tables)
 6 Months Ended
Jun. 30, 2019
Leases [Abstract]  
Lease cost
The following table summarizes the components of lease expense for the six months ended June 30, 2019 ((in thousands):
 
 
June 30, 2019

Operating lease cost
 
$
1,158

Short-term lease cost
 
311

Variable lease cost
 
296

Sublease income
 
(84
)
    Total lease cost
 
$
1,681
Lease assets and liabilities
The following table summarizes the presentation in our condensed consolidated balance sheets of our operating leases (in thousands):
 
 
 
June 30, 2019
Assets:
 
 
 
Operating lease right-of-use assets
 
$
14,110

 
 
 
 
Liabilities:
 
 
 
Operating lease liabilities
 
$
5,693

 
Long-term operating lease liabilities
 
10,788

 
Total operating lease liabilities
 
$
16,481

 
 
 
 
Weighted average remaining lease term (years)
 
3.76

Weighted average discount rate
 
5.1
%
 
 
 
 
Lease liability maturity
Maturities of lease liabilities were as follows (in thousands):
Years ending December 31,
 
2019 (excluding the six months ended June 30, 2019)
$
3,023

2020
5,370

2021
3,954

2022
2,593

2023
2,096

Thereafter
1,158

    Total lease payments
18,194

Less interest
(1,713
)
    Present value of operating lease liabilities
$
16,481