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Condensed Consolidated Balance Sheets Unaudited (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current Assets:
Allowance for doubtful accounts	$ 9,630	$ 8,768
Class A Non-Voting
Shareholders' Investment:
Par or stated value per share (USD per share)	$ 1.00	$ 1.00
Shares authorized (shares)	50,000	50,000
Shares outstanding (shares)	28,557	30,996
Class B Voting
Shareholders' Investment:
Par or stated value per share (USD per share)	$ 1.00	$ 1.00
Shares authorized (shares)	50,000	50,000
Shares issued (shares)		20,812
Shares outstanding (shares)	19,848

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Amount of allowance for credit loss on accounts receivable, classified as current.

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