Investment Securities (Tables)

9 Months Ended

Sep. 30, 2014

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 following tables show 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, 2014 and December 31, 2013, respectively:

	September 30, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Obligations of U.S. government sponsored enterprises	$	6,491	$	23	$	(34	)	$	6,480
Corporate debt securities		62,232		665		(94	)		62,803
Commercial paper		54,997		—		—			54,997
Foreign corporate debt securities		12,734		46		(44	)		12,736
Total fixed-maturity securities		136,454		734		(172	)		137,016
Less total unrestricted fixed-maturity securities – trading		7,944		207		(18	)		8,133
Less total unrestricted fixed-maturity securities – held to   maturity		73,173		—		—			73,173
Total fixed-maturity securities held in trust	$	55,337	$	527	$	(154	)	$	55,710

	December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Obligations of U.S. government sponsored enterprises	$	15,868	$	127	$	(163	)	$	15,832
Corporate debt securities		80,624		1,450		(182	)		81,892
Commercial paper		98,929		4		(1	)		98,932
Foreign corporate debt securities		22,166		149		(170	)		22,145
Total fixed-maturity securities		217,587		1,730		(516	)		218,801
Less total unrestricted fixed-maturity securities – trading		7,326		232		(13	)		7,545
Less total unrestricted fixed-maturity securities – held to   maturity		65,352		—		—			65,352
Total fixed-maturity securities held in trust	$	144,909	$	1,498	$	(503	)	$	145,904

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, 2014 by contractual maturity are as follows:

	Amortized Cost		Estimated Fair Value
Maturity in:
2014	$	63,371	$	63,368
2015-2019		73,083		73,648
Total fixed-maturity securities	$	136,454	$	137,016

Summary of Net Investment Income (Loss)

Net investment income (loss) for the periods ended September 30, 2014 and 2013, respectively, is summarized as follows:

	Three Months			Three Months			Nine Months			Nine Months
	ended September 30,			ended September 30,			ended September 30,			ended September 30,
	2014			2013			2014			2013
Investment income (loss):
Amortization of premium or discount on fixed-maturity securities	$	(392	)	$	(631	)	$	(1,350	)	$	(1,715	)
Investment income on fixed-maturity securities		740			1,621			2,748			5,258
Interest income on cash and equivalents		2			2			9			11
Realized net gain (loss) from sale of investments		19			(767	)		435			(754	)
Unrealized (losses) gains on trading securities held at period end		(283	)		565			(651	)		(4,022	)
Net investment income (loss)	$	86		$	790		$	1,191		$	(1,222	)

Schedule of Investments in Accordance with Fair Value Measurement

The following tables show how the Company’s investments are categorized in accordance with fair value measurement, as of September 30, 2014 and December 31, 2013, respectively:

	September 30, 2014
	Level 1		Level 2		Level 3		Total
Class of Security:
Obligations of U.S. government sponsored enterprises	$	3,021	$	3,459	$	—	$	6,480
Corporate debt securities		30,474		32,329		—		62,803
Commercial paper		54,997		—		—		54,997
Foreign corporate debt securities		1,777		10,959		—		12,736
Total fixed-maturity securities		90,269		46,747		—		137,016
Money market funds		16,517		—		—		16,517
Total	$	106,786	$	46,747	$	—	$	153,533

	December 31, 2013
	Level 1		Level 2		Level 3		Total
Class of Security:
Obligations of U.S. government sponsored enterprises	$	6,299	$	9,533	$	—	$	15,832
Corporate debt securities		11,891		70,001		—		81,892
Commercial paper		98,932		—		—		98,932
Foreign corporate debt securities		7,652		14,493		—		22,145
Total fixed-maturity securities		124,774		94,027		—		218,801
Money market funds		44,863		—		—		44,863
Total	$	169,637	$	94,027	$	—	$	263,664

Summary of Transfers between Level 1 and Level 2

	January 1, 2014 to September 30, 2014				January 1, 2013 to December 31, 2013
	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 securities	$	—	$	15,503		$	—	$	4,598
Foreign corporate debt securities		—		1,525			—		2,537
Total transfers	$	—	$	17,028		$	—	$	7,135