Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

As of December 31, 2017, the future minimum rental payments required under our operating leases are as follows: 

(Dollars in thousands)
2018	$	4,570
2019		3,518
2020		2,662
2021		1,771
2022		874
2023 and thereafter		992
Total	$	14,387