Leases Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Lease, Cost [Abstract]
Operating Lease, Right-of-Use Asset	$ 14,747		$ 14,747		$ 19,544
Operating Lease, Cost	1,770	$ 2,150	3,849	$ 4,270
Finance Lease, Right-of-Use Asset, Amortization	43	22	87	43
Finance Lease, Interest Expense	10	8	21	15
Finance Lease cost	53	30	108	58
Sublease Income	(113)	(157)	(225)	(422)
Lease, Cost	$ 1,710	$ 2,023	$ 3,732	$ 3,906