CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Investments:
Debt securities, available-for-sale, at amortized cost	$ 452,698		$ 433,664
Total investments (including $0,000 and $26,284 related to the VIE, respectively)	491,513		451,525
Premiums receivable, allowance for doubtful accounts	117	$ 77
Deferred financing costs	$ 1,518		$ 596
Shareholders' Equity
Preferred stock, par value (in dollars)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	25,000,000	25,000,000
Common stock, shares issued (in shares)	12,869,366		12,784,444
Common stock, shares outstanding (in shares)	12,869,366	12,784,444