Investment Securities (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2016, are as follows:

	March 31, 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		68,453		21		(1	)		68,473
Corporate debt securities		20,946		93		(10	)		21,029
Foreign corporate debt securities		8,380		11		(17	)		8,374
Total fixed-maturity securities		98,028		126		(28	)		98,126
Less total unrestricted fixed-maturity securities		66,522		21		(2	)		66,541
Total fixed-maturity securities held in trust	$	31,506	$	105	$	(26	)	$	31,585

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 March 31, 2016 by contractual maturity are as follows:

	Amortized Cost		Estimated Fair Value
Maturity in:
2016	$	74,792	$	74,820
2017-2019		23,236		23,306
Total fixed-maturity securities	$	98,028	$	98,126

Summary of Net Investment Income

Net investment income for the periods ended March 31, 2016 and 2015, respectively, is summarized as follows:

	Three months ended March 31, 2016			Three months ended March 31, 2015
Investment income:
Amortization of premium or discount on fixed-maturity securities	$	(122	)	$	(179	)
Investment income on fixed-maturity securities		318			413
Interest income on cash and cash equivalents		328			57
Realized net (loss) gain from sale of investments		(4	)		186
Unrealized gain (loss) on trading securities held at period end		131			(76	)
Net investment income	$	651		$	401

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

March 31, 2016:

	March 31, 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		63,974		4,499		—		68,473
Corporate debt securities		12,007		9,022		—		21,029
Foreign corporate debt securities		2,510		5,864		—		8,374
Total fixed-maturity securities		78,741		19,385		—		98,126
Money market funds		3,286		—		—		3,286
Total	$	82,027	$	19,385	$	—	$	101,412

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 March 31, 2016				January 1, 2014 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	$	—	$	3,168		$	—	$	7,860
Foreign corporate debt securities		—		502			—		2,007
Total transfers	$	—	$	3,670		$	—	$	9,867