Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Estimated fair value of long-term debt	$ 916,300		$ 916,300	$ 1,000,000
Estimated carrying value of long-term debt	850,711		850,711	$ 909,100
Contingent consideration recorded from acquisitions		$ 5,000	5,230
Change in estimated fair value	$ 2,000		$ 2,000