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Restricted cash and cash equivalents
6 Months Ended
Jun. 30, 2016
Cash and Cash Equivalents [Abstract]  
Restricted cash and cash equivalents
Restricted cash and cash equivalents and restricted investments as of June 30, 2016 and December 31, 2015 consisted of the following:
 
June 30,
2016
 
December 31,
2015
 
($ in thousands)
Restricted cash securing letter of credit facilities (1)
$
241,321

 
$
270,755

Restricted cash securing other reinsurance contracts (2)
38,748

 
60,160

Total restricted cash and cash equivalents
280,069

 
330,915

Restricted investments securing other reinsurance contracts (2)
400,562

 
292,111

Total restricted cash and cash equivalents and restricted investments
$
680,631

 
$
623,026

(1)
Restricted cash securing letter of credit facilities pertains to letters of credit issued to clients and cash securing these obligations that the Company will not be released from until the underlying reserves have been settled. The time period for which the Company expects these letters of credit to be in place varies from contract to contract, but can last several years.
(2)
Restricted cash and restricted investments securing other reinsurance contracts pertain to trust accounts securing the Company’s contractual obligations under certain reinsurance contracts that the Company will not be released from until all underlying risks have expired or have been settled. Restricted investments include certain investments in debt securities including U.S. Treasury securities and sovereign debt. The time period for which the Company expects these trust accounts to be in place varies from contract to contract, but can last several years.