Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Summary of Future Minimum Lease Payments

Future minimum lease payments primarily under these agreements follow (in thousands).

For the Year Ended December 31,	Amount
2018	$	6,363
2019		4,101
2020		2,383
2021		1,429
2022		756
Thereafter		2,133
Total	$	17,165