Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (1,996)	$ (21,324)	$ (7,579)	$ (3,535)	$ 25,882
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of premium or discount on fixed maturity securities			13	76
Net realized (gain) loss on sale of investments	(6)	25	(2)	27
Unrealized gain on trading securities	(17)	(2)	(15)	(23)
Loss on derivative embedded conversion feature		25,382		7,353
Equity-based compensation			178	313
Changes in assets and liabilities:
Accrued investment income			11	19
Other assets			(4,412)	19
Cash equivalents held in trust			3,491	(5,327)
Losses and loss adjustment reserves			(201)	(123)
Losses payable				(53)
Unearned premiums		(10)	(39)	(235)
Accrued ceding commission expense				(9)
Accrued interest on notes payable				(5)
Loss contract reserve				(5,435)
Other liabilities			7,583	(533)
Total adjustments			6,607	(3,936)
Net cash used in operating activities			(972)	(7,471)
Cash flows from investing activities:
Purchase of investments				(19,974)
Proceeds from sales and maturities of investments			3,664	72,663
Net cash provided by investing activities			3,664	52,689
Cash flows from financing activities:
Fees incurred and paid relating to preferred stock issuance			(2,500)
Redeemable convertible series B preferred stock dividends			(1,000)	(9,000)
Notes payable – principal repayments				(548)
Net cash used in financing activities			(3,500)	(9,548)
(Decrease) increase in cash and cash equivalents			(808)	35,670
Cash, cash equivalents and restricted cash, beginning of period			605,645	575,838	575,838
Cash, cash equivalents and restricted cash, end of period	$ 604,837	$ 611,508	604,837	611,508	$ 605,645
Supplementary disclosure of cash flow information:
Cash paid during the period, Interest				$ 1,214
Supplementary disclosure of non-cash investing and financing activities:
Value of common stock issued to satisfy series B dividends			$ 12,933