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Long-term Debt (Details Textual) - USD ($)
$ in Millions
1 Months Ended
Jun. 30, 2015
Dec. 31, 2016
Debt Instrument [Line Items]    
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months   $ 21
Long-term Debt, Maturities, Repayments of Principal in Year Two   21
Long-term Debt, Maturities, Repayments of Principal in Year Three   21
Long-term Debt, Maturities, Repayments of Principal in Year Four   21
Long-term Debt, Maturities, Repayments of Principal in Year Five   $ 11
Term Loan [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 111  
Debt Instrument, Term 5 years  
Debt Instrument, Interest Rate During Period 1.20%