Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	1 Months Ended	8 Months Ended	9 Months Ended
	Feb. 02, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Operating lease ROU assets		$ 28,871		$ 33,317
Accrued expenses		8,513		10,698
Operating lease liabilities	$ 23,555	20,608		29,464
Total operating lease liabilities		$ 29,121		$ 40,162
Weighted average remaining lease term		13 years		9 years
Weighted average discount rate		5.34%		6.35%
Cash paid for operating leases	1,575	$ 11,250	$ 18,352
ROU assets obtained in exchange for lease obligations	$ 453	$ 2,807	$ 3,261