Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 42,031	$ 21,029
Adjustments to reconcile net income to net cash used for operating activities:
Amortization of trust preferred securities issuance costs		25
Amortization and depreciation	1,806	1,821
Restricted stock and stock option expense	1,683	2,118
Deferred federal income taxes	2,065	(2,215)
Amortization of bond premium and discount, net	3,700	3,099
Net realized investment gains	(39,068)	(8,563)
Changes in:
Premiums receivable, net	(20,571)	(9,483)
Reinsurance receivables, net	15,845	9,182
Funds held by ceding insurers	(7,160)	(19,382)
Unpaid losses and loss adjustment expenses	(24,871)	(34,196)
Unearned premiums	16,960	34,458
Ceded balances payable	719	427
Other assets and liabilities, net	(3,589)	(837)
Contingent commissions	(2,055)	(2,609)
Federal income tax receivable/payable	5,015	5,451
Deferred acquisition costs, net	(4,687)	(7,715)
Prepaid reinsurance premiums	(1,287)	697
Net cash used for operating activities	(13,464)	(6,693)
Cash flows from investing activities:
Proceeds from sale of fixed maturities	219,195	193,642
Proceeds from sale of equity securities	35,837	42,551
Proceeds from maturity of fixed maturities	50,781	33,530
Amounts paid in connection with derivatives	(10,640)
Purchases of fixed maturities	(271,496)	(214,220)
Purchases of equity securities	(27,798)	(41,781)
Purchases of other invested assets	(11,975)	(10)
Net cash provided by (used for) investing activities	(16,096)	13,712
Cash flows from financing activities:
Purchase of A ordinary shares	(139)	(39)
Borrowings (repayments) under margin borrowing facility	42,560
Net cash provided by (used for) financing activities	42,421	(39)
Net change in cash and cash equivalents	12,861	6,980
Cash and cash equivalents at beginning of period	105,492	104,460
Cash and cash equivalents at end of period	$ 118,353	$ 111,440