Leases (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum rental commitments under non-cancelable operating leases are as follows (amounts in thousands):

Year	Total
2018	$	23,119
2019	16,408
2020	12,120
2021	8,881
2022	5,514
Thereafter	7,172
	$	73,214