Investments (Tables)

6 Months Ended

Jun. 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 June 30, 2017 and December 31, 2016 is as follows.

As of June 30, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Fixed income securities:
U.S. government	$	1,997	$	7	$	(14	)	$	1,990
State municipalities and political subdivisions		4,776		18		(26	)		4,768
Asset-backed securities and collateralized mortgage obligations		15,133		25		(116	)		15,042
Corporate		18,366		85		(48	)		18,403
Total fixed income securities		40,272		135		(204	)		40,203
Equity securities:
Common stock		1,118		26		(36	)		1,108
Warrants to purchase common stock		35		90		(2	)		123
Rights to purchase common stock		29		1		(3	)		27
Total equity securities		1,182		117		(41	)		1,258
Total fixed income and equity securities	$	41,454	$	252	$	(245	)	$	41,461
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 June 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	$	1,329	$	1,915
More than one to five years		15,541		17,197
More than five to ten years		12,178		10,483
More than ten years		11,224		10,608
Total	$	40,272	$	40,203

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 June 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 141 and 122 fixed income investments that were in unrealized loss positions as of June 30, 2017 and December 31, 2016, respectively. The Company held 4 equity investments in unrealized loss positions as of June 30, 2017.

	Less than 12 Months					Greater than 12 Months					Total
As of June 30, 2017	Estimated Fair Value		Unrealized Loss			Estimated Fair Value		Unrealized Loss			Estimated Fair Value		Unrealized Loss
Fixed income securities:
U.S. government	$	1,306	$	(14	)	$	—	$	—		$	1,306	$	(14	)
State municipalities and political subdivisions		2,363		(26	)		—		—			2,363		(26	)
Asset-backed securities and collateralized mortgage obligations		11,408		(115	)		126		(1	)		11,534		(116	)
Corporate		6,733		(48	)		—		—			6,733		(48	)
Total fixed income securities		21,810		(203	)		126		(1	)		21,936		(204	)
Equity securities:
Common stock		226		(36	)		—		—			226		(36	)
Warrants to purchase common stock		13		(2	)		—		—			13		(2	)
Rights to purchase common stock		18		(3	)		—		—			18		(3	)
Total equity securities		257		(41	)		—		—			257		(41	)
Total fixed income and equity securities	$	22,067	$	(244	)	$	126	$	(1	)	$	22,193	$	(245	)
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

The Company does not have any exposure to subprime mortgage-backed investments. Net investment income for the three and six months ended June 30, 2017 and 2016 was as follows:

	Three months ended June 30,						Six months ended June 30,
	2017			2016			2017			2016
Investment income:
Interest on fixed income securities	$	185		$	109		$	317		$	209
Interest on cash and cash equivalents		49			28			96			55
Realized gain upon sale of securities		64			—			64			—
Other		—			2			—			2
Gross investment income		298			139			477			266
Investment expenses		(14	)		(12	)		(25	)		(24	)
Net investment income	$	284		$	127		$	452		$	242