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Leases
12 Months Ended
Dec. 31, 2018
Leases [Abstract]  
Leases
Leases
We lease certain facilities and equipment for periods ranging from one to ten years. The leases generally are renewable and provide for the payment of property taxes, insurance and other costs relative to the property. Rental expense in 2018, 2017, and 2016 was $5.3 million, $5.0 million, and $4.9 million, respectively. Future minimum rental payments under operating leases having initial or remaining non-cancelable terms in excess of one year at December 31, 2018 were as follows:

 
(In thousands)
2019
$
3,680

2020
3,405

2021
2,789

2022
1,404

2023
980

Thereafter
580

Total
$
12,838