Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Minimum Future Rental Payments under Operating Leases

Minimum future rental payments under these leases are as set forth below for each of the following years (dollars in thousands):

2019	$	41,703
2020	35,379
2021	28,833
2022	22,160
2023	18,408
Thereafter	54,410
	$	200,893