Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS [Parenthetical]

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CONSOLIDATED BALANCE SHEETS [Parenthetical] - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Trade accounts receivable, allowances $ 13,479 $ 12,727
Inventories, reserves 1,855 1,227
Notes receivable, allowance 528 539
Property and equipment, accumulated depreciation 162,382 155,495
Amortizable intangible assets, accumulated amortization $ 39,454 $ 34,130
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 22,246,134 22,082,140
Common stock, outstanding 19,928,484 19,764,490
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