Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating Lease Cost	$ 1,325	$ 1,770	$ 2,764	$ 3,849
Amortization of Lease Assets	59	43	98	87
Interest on Lease Liabilities	12	10	19	21
Finance Lease Cost	71	53	117	108
Sublease Income	(187)	(113)	(225)	(225)
Total Net Lease Cost	$ 1,209	$ 1,710	$ 2,656	$ 3,732