COMMITMENTS AND CONTINGENCIES (Tables)
12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments Due Under Non-Cancelable Operating Leases
The following table, as of December 31, 2014, represents the future minimum rental payments due under non-cancelable operating leases that have initial or remaining lease terms in excess of one year:
(Dollars in thousands)
 
2015
$
2,776

2016
1,166

2017
649

2018
360

2019
217

Thereafter
33

Total
$
5,201

Schedule of Unconditional Purchase Obligations
The following table, as of December 31, 2014, summarizes our unconditional purchase obligations.
(Dollars in thousands)
 
2015
$
55,828

2016
28,520

2017
26,973

2018
26,163

2019
26,163

Thereafter
95,258

Total
$
258,905