Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2018

Leases, Operating [Abstract]

Future Minimum Lease Payments under Operating Leases

The following is a schedule by calendar year of future minimum lease payments under operating leases that have remaining terms as of December 31, 2018:

Period/Year	Operating Leases
	(in thousands)
2019	$	3,203
2020	2,799
2021	1,097
2022	677
2023	677
Thereafter	677
Total minimum lease payments	$	9,130

Operating Leases Expense

Total expense for all operating leases for the years ended December 31, 2018, 2017 and 2016 was as follows:

	Year Ended December 31,
	2018		2017		2016
	(in thousands)
Operating lease expense	$	4,039	$	3,833	$	2,615