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Lease Commitments (Tables)
12 Months Ended
Dec. 31, 2015
Leases [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases
Future minimum annual rental commitments under non-cancellable operating leases as of December 31, 2015 were as follows:

 
Total non-cancellable leases
(dollars in thousands)
Year
2016
5,857

2017
4,250

2018
3,618

2019
1,463

Thereafter
1,905

Total
$
17,093