Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Income before income taxes	$ 637,796,000	$ 389,781,000	$ 480,101,000
Unrecognized tax benefits that would impact the effective tax rate	0	0
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward	8,900,000
Geographic distribution, foreign
Operating Loss Carryforwards [Line Items]
Income before income taxes	$ 23,100,000	$ 15,400,000	$ 12,200,000