Investments (Tables)

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of amortized cost, gross unrealized gains and losses and estimated fair value of investments

A summary of the amortized cost, estimated fair value, and gross unrealized gains and losses on the Company’s investments in fixed income and equity securities at September 30, 2017 and December 31, 2016 is as follows.

As of September 30, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Fixed income securities:
U.S. government	$	2,911	$	6	$	(18	)	$	2,899
State municipalities and political subdivisions		5,379		12		(26	)		5,365
Asset-backed securities and collateralized mortgage obligations		16,727		26		(119	)		16,635
Corporate		20,235		113		(40	)		20,308
Total fixed income securities		45,252		157		(202	)		45,207
Equity securities:
Common stock		1,571		66		(25	)		1,612
Warrants to purchase common stock		72		79		(29	)		122
Rights to purchase common stock		39		3		(5	)		37
Total equity securities		1,682		148		(59	)		1,771
Total fixed income and equity securities	$	46,934	$	305	$	(261	)	$	46,978
As of December 31, 2016
Fixed income securities:
U.S. government	$	1,623	$	1	$	(20	)	$	1,604
State municipalities and political subdivisions		2,271		2		(27	)		2,246
Asset-backed securities and collateralized mortgage obligations		12,095		9		(136	)		11,968
Corporate		10,804		28		(91	)		10,741
Total fixed income securities		26,793		40		(274	)		26,559
Equity securities:
Common stock		1,000		136		—			1,136
Total equity securities		1,000		136		—			1,136
Total fixed income and equity securities	$	27,793	$	176	$	(274	)	$	27,695

Schedule of fixed income securities by contractual maturity

The table below summarizes the Company’s fixed income securities at September 30, 2017 by contractual maturity periods. Actual results may differ as issuers may have the right to call or prepay obligations, with or without penalties, prior to the contractual maturity of these obligations.

Matures in:	Amortized Cost		Estimated Fair Value
One year or less	$	2,416	$	2,415
More than one to five years		19,759		19,757
More than five to ten years		11,780		11,804
More than ten years		11,297		11,231
Total	$	45,252	$	45,207

Schedule of aggregate unrealized loss position, by security type, of fixed income securities in unrealized loss positions

The following table highlights, by loss position and security type, those fixed income and equity securities in unrealized loss positions as of September 30, 2017 and December 31, 2016. The tables segregate the holdings based on the period of time the investments have been continuously held in unrealized loss positions. There were 149 and 122 fixed income investments that were in unrealized loss positions as of September 30, 2017 and December 31, 2016, respectively. The Company held 12 equity investments in unrealized loss positions as of September 30, 2017.

	Less than 12 Months					Greater than 12 Months					Total
As of September 30, 2017	Estimated Fair Value		Unrealized Loss			Estimated Fair Value		Unrealized Loss			Estimated Fair Value		Unrealized Loss
Fixed income securities:
U.S. government	$	2,041	$	(18	)	$	175	$	—		$	2,216	$	(18	)
State municipalities and political subdivisions		2,357		(13	)		589		(13	)		2,946		(26	)
Asset-backed securities and collateralized mortgage obligations		11,682		(83	)		1,675		(36	)		13,357		(119	)
Corporate		6,568		(23	)		556		(16	)		7,124		(39	)
Total fixed income securities		22,648		(137	)		2,995		(65	)		25,643		(202	)
Equity securities:							—		—
Common stock		237		(25	)		—		—			237		(25	)
Warrants to purchase common stock		23		(29	)		—		—			23		(29	)
Rights to purchase common stock		18		(5	)		—		—			18		(5	)
Total equity securities		278		(59	)		—					278		(59	)
Total fixed income and equity securities	$	22,926	$	(196	)	$	2,995	$	(65	)	$	25,921	$	(261	)
As of December 31, 2016
Fixed income securities:
U.S. government	$	1,303	$	(20	)	$	—	$	—		$	1,303	$	(20	)
State municipalities and political subdivisions		1,537		(27	)		—		—			1,537		(27	)
Asset-backed securities and collateralized mortgage obligations		9,552		(133	)		460		(3	)		10,012		(136	)
Corporate		5,952		(91	)		—		—			5,952		(91	)
Total fixed income securities	$	18,344	$	(271	)	$	460	$	(3	)	$	18,804	$	(274	)

Schedule of net investment income

Net investment income for the three and nine months ended September 30, 2017 and 2016 was as follows:

	Three months ended September 30,						Nine months ended September 30,
	2017			2016			2017			2016
Investment income:
Interest on fixed income securities	$	231		$	123		$	548		$	332
Interest on cash and cash equivalents		30			34			126			89
Realized gain upon sale of securities		4			—			68			—
Other		—			5			—			7
Gross investment income		265			162			742			428
Investment expenses		(17	)		(11	)		(42	)		(35	)
Net investment income	$	248		$	151		$	700		$	393