Leases (Tables)
 12 Months Ended
Dec. 31, 2016
Leases [Abstract]  
Future Minimum Lease Payments
Future minimum lease payments for noncancelable operating leases for each of the five succeeding years and thereafter are as follows:
(In Thousands)
 
2017
$
1,253

2018
1,072

2019
1,044

2020
1,036

2021
928

Thereafter
4,932

 
$
10,265