XML 15 R4.htm IDEA: XBRL DOCUMENT v3.7.0.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Trade accounts receivable, allowances $ 7,529 $ 6,319
Preferred stock, authorized shares (in shares) 15,000,000 15,000,000
Preferred stock, outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 240,000,000 240,000,000
Common stock, shares issued (in shares) 78,185,000 77,666,000
Treasury stock, shares (in shares) 2,946,000 2,946,000