Investment Securities (Tables)

9 Months Ended

Sep. 30, 2016

Investments Debt And Equity Securities [Abstract]

Schedule of Amortized Cost, Gross Unrealized Gains, Gross Unrealized Losses and Estimated Fair Values of Fixed-Maturity Securities

The amortized cost, gross unrealized gains, gross unrealized losses and estimated fair values of total fixed-maturity securities and total fixed-maturity securities held in trust at September 30, 2016, are as follows:

	September 30, 2016
Class of securities:	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government treasury securities	$	249	$	1	$	—		$	250
Obligations of U.S. government sponsored enterprises		61,435		8		(2	)		61,441
Corporate debt securities		12,907		44		(3	)		12,948
Foreign corporate debt securities		7,818		7		(5	)		7,820
Total fixed-maturity securities		82,409		60		(10	)		82,459
Less total unrestricted fixed-maturity securities		52,959		7		(2	)		52,964
Total fixed-maturity securities held in trust	$	29,450	$	53	$	(8	)	$	29,495

The amortized cost, gross unrealized gains, gross unrealized losses and estimated fair values of total fixed-maturity securities and total fixed-maturity securities held in trust at December 31, 2015, are as follows:

	December 31, 2015
Class of securities:	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government treasury securities	$	249	$	—	$	(1	)	$	248
Obligations of U.S. government sponsored enterprises		69,392		13		(23	)		69,382
Corporate debt securities		21,048		62		(49	)		21,061
Foreign corporate debt securities		8,399		3		(38	)		8,364
Total fixed-maturity securities		99,088		78		(111	)		99,055
Less total unrestricted fixed-maturity securities		66,481		14		(11	)		66,484
Total fixed-maturity securities held in trust	$	32,607	$	64	$	(100	)	$	32,571

Schedule of Amortized Cost and Estimated Fair Value of Fixed-Maturity Securities by Contractual Maturity

Amortized cost and estimated fair value of fixed-maturity securities at September 30, 2016 by contractual maturity are as follows:

	Amortized Cost		Estimated Fair Value
Maturity in:
2016	$	52,733	$	52,737
2017-2019		29,676		29,722
Total fixed-maturity securities	$	82,409	$	82,459

Summary of Net Investment Income

Net investment income for the periods ended September 30, 2016 and 2015, respectively, is summarized as follows:

	Three months ended September 30, 2016			Three months ended September 30, 2015			Nine months ended September 30, 2016			Nine months ended September 30, 2015
Investment income:
Amortization of premium or discount on fixed-maturity securities	$	(74	)	$	(131	)	$	(247	)	$	(454	)
Investment income on fixed-maturity securities		233			298			792			1,037
Interest income on cash and cash equivalents		405			60			1,100			179
Realized net gain from sale of investments		18			52			19			319
Unrealized (loss) gain on trading securities held at period end		(84	)		(38	)		83			(311	)
Net investment income	$	498		$	241		$	1,747		$	770

Schedule of Investments in Accordance with Fair Value Measurement

The following table shows how the Company’s investments are categorized in accordance with fair value measurement, as of

September 30, 2016:

	September 30, 2016
	Level 1		Level 2		Level 3		Total
Class of securities:
U.S. government treasury securities	$	250	$	—	$	—	$	250
Obligations of U.S. government sponsored enterprises		49,985		11,456		—		61,441
Corporate debt securities		3,231		9,717		—		12,948
Foreign corporate debt securities		4,068		3,752		—		7,820
Total fixed-maturity securities		57,534		24,925		—		82,459
Money market funds		5,273		—		—		5,273
Total	$	62,807	$	24,925	$	—	$	87,732

The following table shows how the Company’s investments are categorized in accordance with fair value measurement, as of December 31, 2015:

	December 31, 2015
	Level 1		Level 2		Level 3		Total
Class of securities:
U.S. government treasury securities	$	248	$	—	$	—	$	248
Obligations of U.S. government sponsored enterprises		63,909		5,473		—		69,382
Corporate debt securities		8,873		12,188		—		21,061
Foreign corporate debt securities		2,007		6,357		—		8,364
Total fixed-maturity securities		75,037		24,018		—		99,055
Money market funds		7,301		—		—		7,301
Total	$	82,338	$	24,018	$	—	$	106,356

Summary of Transfers between Level 1 and Level 2

	January 1, 2016 to September 30, 2016				January 1, 2015 to  December 31, 2015
	Transfers from Level 1 to Level 2		Transfers from Level 2 to Level 1			Transfers from Level 1 to Level 2		Transfers from Level 2 to Level 1
Class of securities:
Corporate debt securities	$	—	$	1,773		$	—	$	7,860
Foreign corporate debt securities		—		2,066			—		2,007
Total transfers	$	—	$	3,839		$	—	$	9,867