Leases Leases - ASC 840 Disclosure (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Lessee, Lease, Description [Line Items]
Operating Leases, Future Minimum Payments Due	$ 107,703
Operating Leases, Future Minimum Payments, Due in Two Years	22,210
Operating Leases, Future Minimum Payments, Due in Three Years	17,331
Operating Leases, Future Minimum Payments Receivable, in Four Years	13,667
Operating Leases, Future Minimum Payments, Due in Five Years	10,324
Operating Leases, Future Minimum Payments, Due Thereafter	12,607
Operating Leases, Future Minimum Payments Due, Next Twelve Months	31,564
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	(25)
Operating Leases Future Minimum Payments Due Less Sublease Rentals	$ 107,678