Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)

v2.4.0.8
Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Trade accounts receivable, allowances $ 21,112 $ 15,926
Preferred Stock, par value $ 0.001 $ 0.001
Preferred Stock, shares authorized 10,000 10,000
Preferred Stock, shares issued 0 0
Preferred Stock, shares outstanding 0 0
Class A Common Stock [Member]
    
Common Stock, par value $ 0.001 $ 0.001
Common Stock, shares authorized 100,000 100,000
Common Stock, shares issued 40,056 39,688
Common Stock, shares outstanding 40,056 39,688
Class B Common Stock [Member]
    
Common Stock, par value $ 0.001 $ 0.001
Common Stock, shares authorized 60,000 60,000
Common Stock, shares issued 10,570 10,870
Common Stock, shares outstanding 10,570 10,870