Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v2.4.0.6
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Allowance for doubtful accounts $ 7,829 $ 7,377 $ 6,753
Accumulated depreciation for property, plant and equipment $ 306,637 $ 303,043 $ 286,744
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 0 0 0
Preferred stock, shares outstanding (in shares) 0 0 0
Common stock, no par value (in dollars per share) $ 0 $ 0 $ 0
Common stock, shares authorized (in shares) 125,000,000 125,000,000 125,000,000
Common stock, shares issued (in shares) 34,281,000 34,075,000 33,770,000
Common stock, shares outstanding (in shares) 34,281,000 34,075,000 33,770,000