Segment Information (Segment Reconciliation to Totals reported in the accompanying Consolidated Financial Statements) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Operating income	$ 26,181	$ 21,539	$ 49,826	$ 40,147
Other general and administrative expenses	28,565	25,721	56,207	50,251
Depreciation and amortization	3,401	3,382	6,870	6,829
Interest income	(474)	(291)	(897)	(397)
Interest expense	2,114	2,331	4,872	4,792
Income before income taxes	24,541	19,499	45,851	35,752
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	$ 58,147	$ 50,642	$ 112,903	$ 97,227