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Preferred Stock Rights (Narrative) (Details) (USD $)
0 Months Ended
Jun. 04, 2013
Dec. 31, 2014
Dec. 31, 2013
Class of Stock [Line Items]      
Common Stock, Par value (usd per share) 0.0001us-gaap_CommonStockParOrStatedValuePerShare $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare
Preferred Stock, Par value (usd per share)   $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare
Series B Preferred Stock [Member]      
Class of Stock [Line Items]      
Preferred Stock, Par value (usd per share) 0.0001us-gaap_PreferredStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
   
Exercise Price of Warrants (usd per share) 20.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
   
Common Stock [Member]      
Class of Stock [Line Items]      
Common Stock ownership percentage 4.99%digirad_ClassofWarrantCovenantForExercisibilityCommonStockOwnershipPercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember