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Cash, Cash Equivalents and Short-Term Investments (Tables)

12 Months Ended

Dec. 31, 2020

Cash, Cash Equivalents and Short-Term Investments

Schedule of cash, cash equivalents and short-term investments

Cash, cash equivalents and short-term investments consisted of the following as of December 31, 2019 and 2018 (in thousands):

​

​	​	​	​	​	​	​
​	​	Carrying Value
​		2020			2019
Cash	​	$	25,053	​	$	3,547
Cash equivalents:	​		​	​	​	​
Money market mutual funds	​		11,820	​	​	43,688
Total cash and cash equivalents	​		36,873	​	​	47,235
Short-term investments:	​		​	​	​	​
U.S. Treasury notes and bills	​		23,309	​	​	21,094
Mutual funds	​		33,135	​	​	25,967
Total short-term investments	​		56,444	​	​	47,061
Cash, cash equivalents and short-term investments	​	$	93,317	​	$	94,296

​

Schedule of available-for-sale debt securities

The amortized cost, gross unrealized gains, gross unrealized losses and fair value of available-for-sale debt securities by type of security at December 31, 2020 were as follows (in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Amortized

Unrealized

Unrealized

​

​

​

​

Cost

​

Gains

​

Losses

​

Fair Value

U.S. Treasury notes

​

$

23,179

​

$

173

​

$

(43)

​

$

23,309

Total available-for-sale investments

​

$

23,179

​

$

173

​

$

(43)

​

$

23,309

​

The amortized cost, gross unrealized gains, gross unrealized losses and fair value of available-for-sale debt securities by type of security at December 31, 2019 were as follows (in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Amortized

Unrealized

Unrealized

​

​

​

​

Cost

​

Gains

​

Losses

​

Fair Value

U.S. Treasury notes and bills

​

$

21,122

$

26

$

(54)

​

$

21,094

Total available-for-sale investments

​

$

21,122

$

26

​

$

(54)

​

$

21,094

​

Schedule of investments based on stated contractual maturities

The following table summarizes the fair value of available-for-sale debt securities based on stated contractual maturities as of December 31, 2020 (in thousands):

​

​	​	​	​	​	​	​
​		Amortized Cost			Fair Value
Due within one year	​	$	14,084	​	$	14,111
Due between one and two years	​		9,095	​		9,198
​	​	​	​	​	​	​
Total	​	$	23,179	​	$	23,309

​

The following table summarizes the fair value of available-for-sale debt securities based on stated contractual maturities as of December 31, 2019 (in thousands):

​

​	​	​	​	​	​	​
​		Amortized Cost			Fair Value
Due within one year	​	$	12,044		$	12,047
Due between one and two years	​		9,078			9,047
Total	​	$	21,122		$	21,094

​

Schedule of unrealized gains (losses) on investments

Unrealized gains (losses) during 2020 and 2019 related to equity securities held at December 31, 2020 and 2019 are as follows (in thousands):

​

​	​	​	​	​	​	​
​		2020			2019
Net losses recognized during the year on equity securities	​	$	(245)	​	$	(102)
Less: net losses recognized during the year on equity securities sold during the year	​		(1,090)	​	​	—
Unrealized gains (losses) recognized during the year on equity securities still held at December 31, 2020 and 2019	​	$	845	​	$	(102)

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- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

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