Segment Information (Segment Reconciliation to Totals reported in the accompanying Consolidated Financial Statements) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Operating income	$ 23,645	$ 18,608
Other general and administrative expenses	27,642	24,531
Depreciation and amortization	3,469	3,447
Interest income	(423)	(106)
Interest expense	2,758	2,461
Income before income taxes	21,310	16,253
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	$ 54,756	$ 46,586