Operating Leases Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 18,415	$ 20,900	$ 0
Operating Lease, Liability	18,415	$ 20,889	$ 0
Leases not yet commenced	31,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	2,500
Operating Lease, Cost	5,200
Increase in Operating leases due to new leases	$ 2,700