Leases - Operating Lease Liabilities Payments Due (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 852
Lessee, Operating Lease, Liability, Payments, Due Year Two	2,868
Lessee, Operating Lease, Liability, Payments, Due Year Three	2,565
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,406
Lessee, Operating Lease, Liability, Payments, Due Year Five	2,294
Lessee, Operating Lease, Liability, Payments, Due after Year Five	6,044
Lessee, Operating Lease, Liability, Payments, Due	17,029
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(1,838)
Operating Lease, Liability	15,191	$ 0
Other Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 15,191	$ 11,800