Reinsurance (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Amounts of letters of credit and cash available to us as collateral, plus other potential offsets
Payables to reinsurers	$ 204,741	$ 208,850
Letters of credit	99,078	100,529
Funds held in trust	93,920	88,310
Total credits	$ 397,739	$ 397,689