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COMMITMENTS (Tables)
12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Future fixed and minimum rental commitments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2017, are shown below. Renewal options exist for many long-term leases.
 
 
(Dollars in thousands)
Operating
Leases
2018
$
9,390
2019
8,442
2020
6,935
2021
5,074
2022
2,869
Thereafter
3,885
Total
$
36,595