Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of credit facilities

As of March 31, 2014, the Company had entered into the following letter of credit facilities, which automatically renew annually unless terminated by either party in accordance with the required notice period:

	Facility		Renewal date	Notice period (Unused Facility Portion)
	($ in thousands)
BNP Paribas	$	100,000	February 15, 2015	60 days prior to termination date
Citibank	150,000		January 23, 2015	90 days prior to termination date
J.P. Morgan	50,000		August 22, 2014	60 days prior to termination date
	$	300,000