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Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Allowance for doubtful accounts $ 1.7us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 1.8us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Common stock, par value (in dollars per share) $ 0us-gaap_CommonStockParOrStatedValuePerShare $ 0us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) 100,000,000us-gaap_CommonStockSharesAuthorized 100,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) 18,479,684us-gaap_CommonStockSharesIssued 18,479,684us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares) 18,479,684us-gaap_CommonStockSharesOutstanding 18,479,684us-gaap_CommonStockSharesOutstanding