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  <us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities contextRef="D2008Q1" decimals="-3" unitRef="usd">34622000</us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities>
  <us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities contextRef="D2007Q1" decimals="-3" unitRef="usd">11729000</us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities>
  <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="D2008Q1" decimals="-3" unitRef="usd">22027000</us-gaap:NetCashProvidedByUsedInInvestingActivities>
  <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="D2007Q1" decimals="-3" unitRef="usd">-13102000</us-gaap:NetCashProvidedByUsedInInvestingActivities>
  <us-gaap:ProceedsFromStockOptionsExercised contextRef="D2008Q1" decimals="-3" unitRef="usd">1071000</us-gaap:ProceedsFromStockOptionsExercised>
  <us-gaap:ProceedsFromStockOptionsExercised contextRef="D2007Q1" decimals="-3" unitRef="usd">602000</us-gaap:ProceedsFromStockOptionsExercised>
  <us-gaap:ProceedsFromStockPlans contextRef="D2008Q1" decimals="-3" unitRef="usd">744000</us-gaap:ProceedsFromStockPlans>
  <us-gaap:ProceedsFromStockPlans contextRef="D2007Q1" decimals="-3" unitRef="usd">742000</us-gaap:ProceedsFromStockPlans>
  <us-gaap:ExcessTaxBenefitFromStockBasedCompensationFinancingActivities contextRef="D2008Q1" decimals="-3" unitRef="usd">954000</us-gaap:ExcessTaxBenefitFromStockBasedCompensationFinancingActivities>
  <us-gaap:ExcessTaxBenefitFromStockBasedCompensationFinancingActivities contextRef="D2007Q1" decimals="-3" unitRef="usd">140000</us-gaap:ExcessTaxBenefitFromStockBasedCompensationFinancingActivities>
  <us-gaap:PaymentsForRepurchaseOfCommonStock contextRef="D2007Q1" decimals="-3" unitRef="usd">8613000</us-gaap:PaymentsForRepurchaseOfCommonStock>
  <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="D2008Q1" decimals="-3" unitRef="usd">2769000</us-gaap:NetCashProvidedByUsedInFinancingActivities>
  <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="D2007Q1" decimals="-3" unitRef="usd">-7129000</us-gaap:NetCashProvidedByUsedInFinancingActivities>
  <us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents contextRef="D2008Q1" decimals="-3" unitRef="usd">263000</us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents>
  <us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents contextRef="D2007Q1" decimals="-3" unitRef="usd">4000</us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents>
  <us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease contextRef="D2008Q1" decimals="-3" unitRef="usd">29722000</us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease>
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  <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="I2006Q4" decimals="-3" unitRef="usd">13153000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
  <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="I2007Q1" decimals="-3" unitRef="usd">9306000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
  <us-gaap:OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease contextRef="D2008Q1" decimals="-3" unitRef="usd">736000</us-gaap:OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease>
  <us-gaap:OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease contextRef="D2007Q1" decimals="-3" unitRef="usd">50000</us-gaap:OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease>
  <us-gaap:ComprehensiveIncomeNetOfTax contextRef="D2008Q1" decimals="-3" unitRef="usd">3634000</us-gaap:ComprehensiveIncomeNetOfTax>
  <us-gaap:ComprehensiveIncomeNetOfTax contextRef="D2007Q1" decimals="0" unitRef="usd">9865000</us-gaap:ComprehensiveIncomeNetOfTax>
  <us-gaap:SalesRevenueGoodsNet contextRef="D2008Q1" decimals="-3" unitRef="usd">43671000</us-gaap:SalesRevenueGoodsNet>
  <us-gaap:SalesRevenueGoodsNet contextRef="D2007Q1" decimals="-3" unitRef="usd">47663000</us-gaap:SalesRevenueGoodsNet>
  <us-gaap:PrepaidIncomeTaxes contextRef="I2008Q1" decimals="-3" unitRef="usd">1923000</us-gaap:PrepaidIncomeTaxes>
  <us-gaap:PrepaidIncomeTaxes contextRef="I2007Q4" decimals="-3" unitRef="usd">2740000</us-gaap:PrepaidIncomeTaxes>
  <icui:UnrealizedHoldingLoss contextRef="I2008Q1" decimals="-3" unitRef="usd">-635000</icui:UnrealizedHoldingLoss>
</xbrli:xbrl>
