Quarterly report pursuant to Section 13 or 15(d)

Other Long-term Debt (Details Textuals)

v2.4.0.8
Other Long-term Debt (Details Textuals) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2014
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Sep. 30, 2014
Senior Note Payable Due April 2017 Fixed
Sep. 30, 2014
Senior Note Payable Due April 2017 Variable
Sep. 30, 2014
Senior Note Payable Due April 2019 Fixed
Debt Instrument [Line Items]          
DebtInstrumentFaceAmount   $ 0 $ 500,000,000 $ 250,000,000 $ 500,000,000
DebtInstrumentInterestRateStatedPercentage   0.00% 1.375% 1.375% 2.20%
Debt Instrument, Maturity Date, Description no longer than 90 days 12/31/99 4/27/2017 4/27/2017 04/01/19
DebtInstrumentpercentofvalue   0.00% 99.842% 100.00% 99.842%
Debt Instrument, Description of Variable Rate Basis three month LIBOR     three-month LIBOR  
Debt Instrument, Basis Spread on Variable Rate       0.425%