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Business Combinations (Schedule Of Purchase Price Allocation) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Nov. 14, 2011
Business Acquisition [Line Items]                    
Goodwill (Note 8) $ 43,218us-gaap_Goodwill $ 44,645us-gaap_Goodwill $ 86,384us-gaap_Goodwill $ 86,529us-gaap_Goodwill $ 84,436us-gaap_Goodwill $ 83,833us-gaap_Goodwill $ 106,746us-gaap_Goodwill $ 107,001us-gaap_Goodwill $ 106,717us-gaap_Goodwill  
IZI Medical Products [Member]                    
Business Acquisition [Line Items]                    
Current assets                   4,587us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets
/ dei_LegalEntityAxis
= ldr_IZIMember
Property, plant and equipment                   763us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ dei_LegalEntityAxis
= ldr_IZIMember
Intangible assets                   27,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ dei_LegalEntityAxis
= ldr_IZIMember
Goodwill (Note 8)                   64,069us-gaap_Goodwill
/ dei_LegalEntityAxis
= ldr_IZIMember
Non-current deferred taxes, net                   212us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssetsNoncurrent
/ dei_LegalEntityAxis
= ldr_IZIMember
Other non-current assets                   24us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
/ dei_LegalEntityAxis
= ldr_IZIMember
Current liabilities                   (2,196)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
/ dei_LegalEntityAxis
= ldr_IZIMember
Other long-term liabilities                   (176)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
/ dei_LegalEntityAxis
= ldr_IZIMember
Total assets acquired and liabilities assumed                   $ 94,283us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ dei_LegalEntityAxis
= ldr_IZIMember