Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v2.4.1.9
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Allowance for doubtful accounts $ 7,679us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 8,943us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 6,669us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accumulated depreciation for property, plant and equipment $ 344,266us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment $ 345,612us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment $ 339,296us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Preferred stock, shares authorized (in shares) 10,000us-gaap_PreferredStockSharesAuthorized 10,000us-gaap_PreferredStockSharesAuthorized 10,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued (in shares) 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding (in shares) 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Common stock, no par value (in dollars per share) $ 0us-gaap_CommonStockNoParValue $ 0us-gaap_CommonStockNoParValue $ 0us-gaap_CommonStockNoParValue
Common stock, shares authorized (in shares) 125,000us-gaap_CommonStockSharesAuthorized 125,000us-gaap_CommonStockSharesAuthorized 125,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) 70,395us-gaap_CommonStockSharesIssued 69,828us-gaap_CommonStockSharesIssued 69,744us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares) 70,395us-gaap_CommonStockSharesOutstanding 69,828us-gaap_CommonStockSharesOutstanding 69,744us-gaap_CommonStockSharesOutstanding