Available-for-Sale-Securities

3 Months Ended

Mar. 31, 2019

Debt Securities, Available-for-sale [Abstract]

Available-for-Sale Securities

Available-for-Sale-Securities

The following table is a summary of available-for-sale securities recorded in cash and cash equivalents or marketable securities in our Consolidated Balance Sheets (in thousands):

	March 31, 2019									December 31, 2018
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value		Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Corporate debt securities	$	25,532	$	—	$	(18	)	$	25,514	$	33,536	$	—	$	(32	)	$	33,504
Money market funds	10,607		—		—			10,607		4,314		—		—			4,314
Total	$	36,139	$	—	$	(18	)	$	36,121	$	37,850	$	—	$	(32	)	$	37,818

Estimated fair values of available-for-sale securities are generally based on prices obtained from commercial pricing services. The following table summarizes the classification of the available-for-sale securities in our Consolidated Balance Sheets (in thousands):

	March 31, 2019		December 31, 2018
Cash and cash equivalents	$	12,175	$	5,064
Marketable securities	23,946		32,754
Total	$	36,121	$	37,818

The following table summarizes our portfolio of available-for-sale securities by contractual maturity (in thousands):

	March 31, 2019
	Amortized Cost		Estimated Fair Value
Less than one year	$	36,139	$	36,121
Greater than one year	—		—
Total	$	36,139	$	36,121