Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2017

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, 2017 were as follows:

	Total non-cancellable leases
(dollars in thousands)
Year
2018	$	6,843
2019	6,676
2020	6,029
2021	5,123
Thereafter	11,186
Total	$	35,857