Leases Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 7,083	$ 6,697
Operating Lease, Weighted Average Remaining Lease Term	1 year 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	4.50%
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 3,573
Lessee, Operating Lease, Liability, Payments, Due Year Two	542
Lessee, Operating Lease, Liability, Payments, Due Year Three	166
Lessee, Operating Lease, Liability, Payments, Due Year Four	38
Lessee, Operating Lease, Liability, Payments, Due Year Five	39
Lessee, Operating Lease, Liability, Payments, Due after Year Five	287
Lessee, Operating Lease, Liability, Payments, Due	4,645
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(221)
Operating Lease, Liability	4,424
Operating Lease, Payments	6,352	4,609
Operating Lease, Payments, Use	10	41
Operating Leases, Rent Expense	5,800	5,400
Building [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract			4 years
Operating Leases, Future Minimum Payments Due	300
General and Administrative Expense [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	704	681
Lease Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Short-term Lease, Cost	724	2,071
Operating Lease, Cost	5,655	3,945
Property, Plant and Equipment [Member]
Lessee, Lease, Description [Line Items]
Short-term Lease, Cost	3,774	10,573
Operating Lease, Cost	10	41
Lease, Cost	$ 3,784	$ 10,614