Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Trade accounts receivable, allowances $ 48,449 $ 41,647
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 131,299,000 130,386,000
Common Stock, shares outstanding 131,299,000 130,386,000
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 24,545,000
Common Stock, shares outstanding 24,545,000 24,545,000