Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (91,655)	$ (625)
Adjustments to reconcile net loss to cash (used in) provided by operating activities:
Depreciation and amortization expense	5,754	5,365
Deferred federal income tax (benefit) expense	(6,513)	817
Investment losses (gains), net	22,894	(20,618)
Share-based payments expense	(400)	887
Impairment of goodwill and other intangibles	45,996
Change in ceded unearned premiums	25,295	(31,190)
Change in premiums receivable	27,956	(28,510)
Change in accounts receivable	(1,681)	(2,667)
Change in deferred policy acquisition costs	5,154	(8,703)
Change in reserves for losses and loss adjustment expenses	169,413	93,108
Change in unearned premiums	(68,120)	90,865
Change in reinsurance recoverable	(174,765)	(63,437)
Change in reinsurance payable	(12,574)	(8,054)
Change in federal income tax recoverable	(16,647)	(8,999)
Change in all other liabilities	(4,452)	5,158
Change in all other assets	5,018	4,273
Net cash (used in) provided by operating activities	(69,327)	27,670
Cash flows from investing activities:
Purchases of property and equipment	(1,667)	(4,188)
Purchases of investment securities	(285,507)	(259,769)
Maturities, sales and redemptions of investment securities	409,861	231,603
Net cash provided by (used in) investing activities	122,687	(32,354)
Cash flows from financing activities:
Proceeds from exercise of employee stock options		1,520
Payment of revolving credit facility		(30,000)
Payment of debt issuance costs		(979)
Proceeds from senior unsecured note offering		50,000
Purchase of treasury shares		(1,380)
Net cash provided by financing activities		19,161
Increase in cash and cash equivalents and restricted cash	53,360	14,477
Cash and cash equivalents and restricted cash at beginning of period	54,948	40,471
Cash and cash equivalents and restricted cash at end of period	$ 108,308	$ 54,948