Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.5.0.2
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Trade accounts receivable, allowances $ 26,602 $ 24,260
Preferred Stock, par value $ 0.001 $ 0.001
Preferred Stock, shares authorized 10,000,000 10,000,000
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 500,000,000 500,000,000
Common Stock, shares issued 129,641,000 127,324,000
Common Stock, shares outstanding 129,641,000 127,324,000
Class B Convertible Common Stock [Member]    
Common Stock, par value $ 0.001 $ 0.001
Common Stock, shares authorized 75,000,000 75,000,000
Common Stock, shares issued 24,545,000 26,278,000
Common Stock, shares outstanding 24,545,000 26,278,000