Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Trade accounts receivable, allowances $ 8,438 $ 7,939
Allowance for Doubtful Other Receivables, Current 640 586
Notes receivable, allowance 473 571
Property and equipment, accumulated depreciation 196,340 191,638
Amortizable intangible assets, accumulated amortization $ 60,075 $ 59,383
Treasury stock, shares 2,317,650 2,317,650
Common Class A [Member]    
Common stock, par value $ 0.01 $ 0.01
Common stock, authorized 80,000,000 80,000,000
Common stock, issued 23,980,741 23,980,741
Common stock, outstanding 21,663,091 21,663,091
Common Class B [Member]    
Common stock, par value $ 0.01 $ 0.01
Common stock, authorized 20,000,000 20,000,000
Common stock, issued 5,553,696 5,553,696
Common stock, outstanding 5,553,696 5,553,696