Restructuring and Other Related Charges (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 0	$ 155,000	$ 0	$ 8,780,000
Management Changes
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges		200,000		8,800,000
Management Changes | A M C N I Reporting Unit
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges				4,500,000
Management Changes | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges		$ 200,000		$ 4,300,000