Leases Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 6,697
Operating Lease, Weighted Average Remaining Lease Term	1 year 10 months
Operating Lease, Weighted Average Discount Rate, Percent	5.00%
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 7,032
Lessee, Operating Lease, Liability, Payments, Due Year Two	2,436
Lessee, Operating Lease, Liability, Payments, Due Year Three	118
Lessee, Operating Lease, Liability, Payments, Due Year Four	60
Lessee, Operating Lease, Liability, Payments, Due Year Five	38
Lessee, Operating Lease, Liability, Payments, Due after Year Five	325
Lessee, Operating Lease, Liability, Payments, Due	10,009
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(489)
Operating Lease, Liability	9,520
Operating Lease, Payments	4,609
Operating Lease, Payments, Use	41
Operating Leases, Rent Expense	5,400	$ 4,400
Building [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract			4 years
Operating Leases, Future Minimum Payments Due	900
General and Administrative Expense [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	681
Lease Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Short-term Lease, Cost	2,071
Operating Lease, Cost	3,945
Property, Plant and Equipment [Member]
Lessee, Lease, Description [Line Items]
Short-term Lease, Cost	10,573
Operating Lease, Cost	41
Lease, Cost	10,614
Operating lease commitments [Member]
Lessee, Lease, Description [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	7,000	4,470
Operating Leases, Future Minimum Payments, Due in Two Years	2,400	838
Operating Leases, Future Minimum Payments, Due in Three Years	100	332
Operating Leases, Future Minimum Payments, Due in Four Years		0
Operating Leases, Future Minimum Payments Due	$ 10,000	$ 5,640