Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Cash flows from operating activities:
Net (loss) income	$ (5,583)	$ 17,789	$ 25,882
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Amortization of premium or discount on fixed maturity securities	7	31
Net realized loss on sale of investments	4	2
Unrealized loss (gain) on trading securities	2	(21)
Gain on derivative embedded conversion feature		(18,029)
Equity-based compensation	102	140
Changes in assets and liabilities:
Accrued investment income	(2)	(28)
Other assets	(121)	(74)
Cash equivalents held in trust	3,259	(1,029)
Losses and loss adjustment reserves	(66)	(188)
Losses payable		(53)
Unearned premiums	(39)	(225)
Accrued ceding commission expense		(6)
Accrued interest on notes payable		(3)
Loss contract reserve		(916)
Other liabilities	3,890	(246)
Total adjustments	7,036	(20,645)
Net cash provided by (used in) operating activities	1,453	(2,856)
Cash flows from investing activities:
Purchase of investments		(19,974)
Proceeds from sales and maturities of investments	494	47,513
Net cash provided by investing activities	494	27,539
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)	(4,500)
Notes payable – principal repayments		(351)
Net cash used in financing activities	(3,500)	(4,851)
(Decrease) increase in cash and cash equivalents	(1,553)	19,832
Cash, cash equivalents and restricted cash, beginning of period	605,645	575,838	575,838
Cash, cash equivalents and restricted cash, end of period	$ 604,092	595,670	$ 605,645
Supplementary disclosure of cash flow information:
Cash paid during the period, Interest		$ 610