Lease Commitments and Contingencies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating lease expense	$ 1,976
Variable lease expense	72
Short-term lease expense	583
Sublease income	(122)
Total lease cost	$ 2,509
Weighted-average remaining lease term	19 years 11 months
Weighted-average discount rate	5.00%
Operating cash flows for operating leases	$ 1,794
Leased assets obtained in exchange for new operating lease liabilities (non-cash activity)	$ 74