Leases Operating Lease Maturities Under ASC 842 (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Operating Lease Liability Maturities Under ASC 842 [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 2,499
Lessee, Operating Lease, Liability, Payments, Due Year Two	1,970
Lessee, Operating Lease, Liability, Payments, Due Year Three	1,624
Lessee, Operating Lease, Liability, Payments, Due Year Four	1,235
Lessee, Operating Lease, Liability, Payments, Due Year Five	909
Lessee, Operating Lease, Liability, Payments, Due after Year Five	1,041
Lessee, Operating Lease, Liability, Payments, Due	9,278
Impact of discounting	(909)
Discounted value of operating lease obligations	8,369
Current operating lease liabilities	2,180
Noncurrent operating lease liabilities	$ 6,189	$ 0