Income Taxes (Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits ) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of the beginning and ending amount of unrecognized tax benefits
Beginning of year	$ 5,275,000	$ 4,864,000	$ 6,392,000
Additions based on tax positions related to the current year	951,000	1,023,000	918,000
Additions for tax positions in prior years	353,000	364,000	770,000
Reductions for tax positions in prior years	(26,000)	(51,000)	(2,907,000)
Reductions as a result of a lapse of the applicable statute of limitations	(1,923,000)	(925,000)	(309,000)
End of year	$ 4,630,000	$ 5,275,000	$ 4,864,000