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Inventory (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | ||
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Mar. 31, 2015
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Mar. 31, 2014
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Dec. 31, 2014
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| Inventory [Line Items] | |||
| Inventory reserves | $ 659us-gaap_InventoryValuationReserves | $ 539us-gaap_InventoryValuationReserves | |
| Production Materials | |||
| Inventory [Line Items] | |||
| Inventory reserves related to production issues |
120us-gaap_InventoryWriteDown / us-gaap_PublicUtilitiesInventoryAxis = navb_ProductionMember |
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| In Process Research and Development | |||
| Inventory [Line Items] | |||
| Inventory reserves related to production issues |
$ 37us-gaap_InventoryWriteDown / us-gaap_PublicUtilitiesInventoryAxis = us-gaap_InProcessResearchAndDevelopmentMember |
$ 10us-gaap_InventoryWriteDown / us-gaap_PublicUtilitiesInventoryAxis = us-gaap_InProcessResearchAndDevelopmentMember |
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- Details
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- Definition
Amount of valuation reserve for inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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