XML 73 R51.htm IDEA: XBRL DOCUMENT v3.3.1.900
Accounting Policies Accounts Receivable (Details)
12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Concentration Risk [Line Items]    
Allowance for Doubtful Accounts Receivable $ 0 $ 0
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Largest customer [Member]    
Concentration Risk [Line Items]    
Number of Customers 1  
Concentration Risk, Percentage 15.20% 21.00%