Annual report pursuant to Section 13 and 15(d)

Balance Sheets (Parenthetical)

v3.8.0.1
Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Customer receivables, allowances $ 9,465 $ 8,346
Common stock, par value $ 0.10 $ 0.10
Common stock, shares authorized 140,000,000 140,000,000
Common stock, shares outstanding 82,375,945 82,416,657