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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Mar. 31, 2014
Current assets:    
Receivables, allowances $ 247us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 182us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Shareholders' equity:    
Preferred stock, par value (in dollars per share) $ 0us-gaap_PreferredStockNoParValue $ 0us-gaap_PreferredStockNoParValue
Preferred stock, shares authorized (in shares) 5,000,000us-gaap_PreferredStockSharesAuthorized 5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued (in shares) 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding (in shares) 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in dollars per share) $ 0us-gaap_CommonStockNoParValue $ 0us-gaap_CommonStockNoParValue
Common stock, shares authorized (in shares) 35,000,000us-gaap_CommonStockSharesAuthorized 35,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) 22,539,000us-gaap_CommonStockSharesIssued 22,308,000us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares) 22,539,000us-gaap_CommonStockSharesOutstanding 22,308,000us-gaap_CommonStockSharesOutstanding