Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 15,025	$ 647
Adjustments to reconcile net income to cash used in operating activities:
Depreciation and amortization expense	1,283	1,238
Deferred federal income taxes	2,486	(1,146)
Investment (gains) losses, net	(11,937)	4,835
Share-based payments expense	57	44
Change in ceded unearned premiums	232	(442)
Change in premiums receivable	(12,247)	(4,114)
Change in accounts receivable	(232)	(296)
Change in deferred policy acquisition costs	(4,934)	8
Change in unpaid losses and loss adjustment expenses	2,979	2,584
Change in unearned premiums	18,140	(72)
Change in reinsurance recoverable	(16,619)	(31,441)
Change in reinsurance balances payable	1,353	3,511
Change in current federal income tax payable	1,407	1,398
Change in all other liabilities	(553)	3,701
Change in all other assets	1,600	330
Net cash used in operating activities	(1,960)	(19,215)
Cash flows from investing activities:
Purchases of property and equipment	(1,847)	(570)
Purchases of investment securities	(43,841)	(38,619)
Maturities, sales and redemptions of investment securities	75,849	48,822
Net cash provided by investing activities	30,161	9,633
Cash flows from financing activities:
Proceeds from exercise of employee stock options	1,520
Purchase of treasury shares	(1,380)	(377)
Net cash provided by (used in) financing activities	140	(377)
Increase (decrease) in cash and cash equivalents and restricted cash	28,341	(9,959)
Cash and cash equivalents and restricted cash at beginning of period	40,471	67,633
Cash and cash equivalents and restricted cash at end of period	$ 68,812	$ 57,674