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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS    
Trade receivables, allowance for doubtful accounts (in dollars) $ 367us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 802us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Common stock, par value (in dollars per share) $ 0us-gaap_CommonStockNoParValue $ 0us-gaap_CommonStockNoParValue
Common stock, authorized shares 50,000us-gaap_CommonStockSharesAuthorized 50,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 9,213us-gaap_CommonStockSharesIssued 9,091us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 9,213us-gaap_CommonStockSharesOutstanding 9,091us-gaap_CommonStockSharesOutstanding
Preferred stock, par value (in dollars per share) $ 1.00us-gaap_PreferredStockParOrStatedValuePerShare $ 1.00us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, authorized shares 5,000us-gaap_PreferredStockSharesAuthorized 5,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding