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Available-for-Sale-Securities
 12 Months Ended
Dec. 31, 2019
Investments, Debt and Equity Securities [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 in the Company's Consolidated Balance Sheets (in thousands):
 
December 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
$
11,673

 
$
3

 
$
(1
)
 
$
11,675

 
$
33,536

 
$
—

 
$
(32
)
 
$
33,504

Money market funds
11,093

 
—

 
—

 
11,093

 
4,314

 
—

 
—

 
4,314

Total
$
22,766

 
$
3

 
$
(1
)
 
$
22,768

 
$
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 debt securities on the Company's Consolidated Balance Sheets (in thousands):
 
December 31, 2019
 
December 31, 2018
Cash and cash equivalents
$
11,643

 
$
5,064

Marketable securities
11,125

 
32,754

Total
$
22,768

 
$
37,818



The following table summarizes the Company's portfolio of available-for-sale securities by contractual maturity (in thousands):
 
December 31, 2019
 
December 31, 2018
 
Amortized Cost
 
Estimated Fair Value
 
Amortized Cost
 
Estimated Fair Value
Less than one year
$
22,766

 
$
22,768

 
$
37,850

 
$
37,818

Greater than one year
—

 
—

 
—

 
—

Total
$
22,766

 
$
22,768

 
$
37,850

 
$
37,818