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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, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Operating income	$ 21,539	$ 16,894	$ 40,147	$ 30,407
Other general and administrative expenses	25,721	24,111	50,251	48,188
Depreciation and amortization	3,382	3,609	6,829	7,130
Interest income	(291)	(108)	(397)	(166)
Interest expense	2,331	1,986	4,792	3,806
Income before income taxes	19,499	15,016	35,752	26,767
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	$ 50,642	$ 44,614	$ 97,227	$ 85,725

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