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, except Share data, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Trade accounts receivable, allowance for doubtful accounts $ 14,398 $ 10,809
Inventories, reserves 2,748  
Notes receivable, allowance 1,022 548
Property, plant and equipment, accumulated depreciation 153,295 145,215
Amortizable intangible assets, accumulated amortization $ 32,600 $ 27,933
Treasury stock, shares 2,317,650 2,317,650
Class A Common Stock
   
Common stock, par value $ 0.01 $ 0.01
Common stock, authorized 80,000,000 80,000,000
Common stock, issued 22,030,640 21,803,303
Common stock, outstanding 19,712,990 19,485,653
Class B Common Stock
   
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