Investments (Tables)

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments in Fixed Maturity Securities

At December 31, 2017, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:

(in thousands)	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities	$	29,970	$	—	$	(206	)	$	29,764
Corporate debt	1,072		12		—			1,084
Total	$	31,042	$	12	$	(206	)	$	30,848

At December 31, 2017, the Company held $30.0 million in fixed income securities composed of U.S Treasury securities, securities issued by U.S. Government agencies and Municipalities, and $1.1 million issued by corporations with investment-grade ratings. Of the total, $16.9 million is classified as short-term investments on the Consolidated Balance Sheet as maturities are less than one year in duration. Additionally, the Company holds $8.1 million in short-term investments, which are related to time deposits held with various financial institutions.

At December 31, 2016, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:

(in thousands)	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities	$	26,280	$	11	$	(59	)	$	26,232
Corporate debt	2,358		13		(1		)	2,370
Total	$	28,638	$	24	$	(60	)	$	28,602

Summary of Unrealized Loss Position

For securities in a loss position, the following table shows the investments’ gross unrealized loss and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2017:

(in thousands)	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities	$	17,919	$	(157	)	$	11,845	$	(49	)	$	29,764	$	(206	)
Corporate debt	400		—			—		—			400		—
Total	$	18,319	$	(157	)	$	11,845	$	(49	)	$	30,164	$	(206	)

The following table shows the investments’ gross unrealized loss and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2016:

(in thousands)	Less than 12 Months					12 Months or More				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities	$	14,663	$	(59	)	$	—	$	—	$	14,663	$	(59	)
Corporate debt	1,001		(1		)	—		—		1,001		(1		)
Total	$	15,664	$	(60	)	$	—	$	—	$	15,664	$	(60	)

Amortized Cost and Fair Value of Fixed Maturity Securities by Contractual Maturity

The amortized cost and estimated fair value of the fixed maturity securities at December 31, 2017 by contractual maturity are set forth below:

(in thousands)	Amortized Cost		Fair Value
Years to maturity:
Due in one year or less	$	16,934	$	16,899
Due after one year through five years	13,876		13,708
Due after five years through ten years	232		241
Total	$	31,042	$	30,848

The amortized cost and estimated fair value of the fixed maturity securities at December 31, 2016 by contractual maturity are set forth below:

(in thousands)	Amortized Cost		Fair Value
Years to maturity:
Due in one year or less	$	5,551	$	5,554
Due after one year through five years	22,757		22,708
Due after five years through ten years	330		340
Total	$	28,638	$	28,602