Annual report pursuant to Section 13 and 15(d)

Accounts and Other Receivables and Concentrations of Credit Risk (Narrative) (Details)

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Accounts and Other Receivables and Concentrations of Credit Risk (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Accounts Receivable And Concentrations Of Credit Risk [Line Items]    
Allowance for doubtful accounts receivable $ 0 $ 0
Accounts and Other Receivables [Member] | Customer Concentration Risk [Member] | Cardinal Health [Member]    
Accounts Receivable And Concentrations Of Credit Risk [Line Items]    
Percentage of net accounts and other receivables 67.00% 91.00%
Accounts and Other Receivables [Member] | Customer Concentration Risk [Member] | Devicor [Member]    
Accounts Receivable And Concentrations Of Credit Risk [Line Items]    
Percentage of net accounts and other receivables 32.00%