Committments and Contingencies Lease Commitments & Text (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Operating Leases [Line Items]
Lessee, Operating Lease, at Carrying Value	$ 14,000			$ 7,200
Lessee, Operating Lease, Discount Rate	4.50%
Operating Lease, Expense	$ 5,400
Operating Leases, Rent Expense		$ 4,300	$ 4,100
Deferred Revenue, Revenue Recognized		(200)	$ (200)
Deferred Revenue, Noncurrent		$ 500
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	2,700
Lessee, Operating Lease, Liability, Payments, Due Year Two	2,702
Lessee, Operating Lease, Liability, Payments, Due Year Three	2,525
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,337
Lessee, Operating Lease, Liability, Payments, Due Year Five	2,278
Lessee, Operating Lease, Liability, Payments, Due after Year Five	4,400
Lessee, Operating Lease, Liability, Payments, Due	16,942
Lessee, Operating Lease, Future Value of Interest Expense	(2,899)
Operating Lease, Liability	14,043
Majority Shareholder
Operating Leases [Line Items]
Lessee, Operating Lease, at Carrying Value	$ 12,600			$ 6,100