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Leases (Tables)
12 Months Ended
Dec. 31, 2016
Leases [Abstract]  
Future Minimum Rental Payments Under Operating Leases
Future minimum rental payments under operating leases having initial or remaining non-cancelable terms in excess of one year at December 31, 2016 were as follows:

 
(In thousands)
2017
$
4,270

2018
3,505

2019
2,732

2020
2,492

2021
1,864

Thereafter
1,106

Total
$
15,969