Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income tax payments	$ 400	$ 1,000
Income tax refunds	4,200	2,600
Income tax (benefit) provision	(535)	3,767
Income before income tax provision	$ 14,258	$ 43,399
Effective income tax rate	(3.80%)	8.70%
Discrete tax charges	$ 7,300
Discrete tax benefits	$ 4,700	$ 2,500
Annual effective income tax rate, excluding discrete items	22.00%	14.50%
Change in income before income tax	$ 29,100
Gross unrecognized tax benefits	6,300	$ 2,300
Net (benefit) expense in interest and penalties related to uncertain tax positions	100	100
Interest and penalties accrued	$ 100	$ 100