Debt Contingent interest (Details) (USD $)	9 Months Ended
	Sep. 30, 2014 Rate
December 12, 2013 [Member]
Contingent Interest, Accrual Period, Start Date	Dec. 15, 2013
Contingent Interest, Accrual Period, End Date	Mar. 14, 2014
Debt instrument, convertible, contingent interest rate	0.125%
Contingent Interest, Trading Price Period End Date	Dec. 12, 2013
contingent cash interest paid per stated liquidation amount	$ 0.09
Contingent Interest, Payment Date	Mar. 17, 2014
March 13, 2014 [Member]
Contingent Interest, Accrual Period, Start Date	Mar. 15, 2014
Contingent Interest, Accrual Period, End Date	Jun. 14, 2014
Debt instrument, convertible, contingent interest rate	0.125%
Contingent Interest, Trading Price Period End Date	Mar. 13, 2014
contingent cash interest paid per stated liquidation amount	0.09
Contingent Interest, Payment Date	Jun. 16, 2014
June 12, 2014 [Member]
Contingent Interest, Accrual Period, Start Date	Jun. 15, 2014
Contingent Interest, Accrual Period, End Date	Sep. 15, 2014
Debt instrument, convertible, contingent interest rate	0.125%
Contingent Interest, Trading Price Period End Date	Jun. 12, 2014
contingent cash interest paid per stated liquidation amount	0.09
Contingent Interest, Payment Date	Sep. 15, 2014
September 12, 2014 [Member]
Contingent Interest, Accrual Period, Start Date	Sep. 15, 2014
Contingent Interest, Accrual Period, End Date	Dec. 14, 2014
Debt instrument, convertible, contingent interest rate	0.125%
Contingent Interest, Trading Price Period End Date	Sep. 12, 2014
contingent cash interest paid per stated liquidation amount	$ 0.10
Contingent Interest, Payment Date	Dec. 15, 2014