Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v2.4.0.8
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Allowance for doubtful accounts $ 6,669 $ 8,282 $ 7,829
Accumulated depreciation for property, plant and equipment $ 339,296 $ 326,380 $ 306,637
Preferred stock, shares authorized (in shares) 10,000 10,000 10,000
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) 125,000 125,000 125,000
Common stock, shares issued (in shares) 34,872 34,595 34,281
Common stock, shares outstanding (in shares) 34,872 34,595 34,281