Leases: Lessee, Operating Lease, Liability, Maturity (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Details
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 37
Lessee, Operating Lease, Liability, Payments, Due Year Two	38
Lessee, Operating Lease, Liability, Payments, Due Year Three	40
Lessee, Operating Lease, Liability, Payments, Due Year Four	27
Lessee, Operating Lease, Liability, Payments, Due Year Five	29
Lessee, Operating Lease, Liability, Payments, Due after Year Five	$ 280