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FAIR VALUE OF FINANCIAL INSTRUMENTS
6 Months Ended
Jun. 30, 2021
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments
8.
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
In accordance with ASC Topic 820, the Company measures cash and cash equivalents, marketable debt and equity securities at fair value on a recurring basis. Other investments are measured at fair value on a nonrecurring basis.
 
The following are the major categories of assets and liabilities measured at fair value on a recurring basis as of June 30, 2021 and December 31, 2020, using quoted prices in active markets for identical assets (Level 1) and significant other observable inputs (Level 2). For the periods presented, there were no major assets measured at fair value on a recurring basis which uses significant unobservable inputs (Level 3):
 
Assets and liabilities measured at fair value on a recurring basis are summarized below:
 
 
 
Fair value measurement at reporting date using
 
Description
 
Total
June 30,
2021
 
 
 
 
 
 
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
 
 
 
 
 
 
 
 
 
 
Significant Other
Observable Inputs
(Level 2)
 
 
 
 
 
 
Significant
Unobservable Inputs
(Level 3)
 
 
 
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash equivalents:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market mutual funds
 
$
 
 
 
 
 
 
 
1,644,000
 
 
$
1,644,000
 
 
$
-
 
 
$
-
 
US T-bills
 
 
2,400,000
 
 
 
2,400,000
 
 
 
-
 
 
 
-
 
Marketable securities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate debt securities
 
 
697,000
 
 
 
-
 
 
 
697,000
 
 
 
-
 
Marketable equity securities
 
 
2,131,000
 
 
 
2,131,000
 
 
 
-
 
 
 
-
 
Total assets
 
$
6,872,000
 
 
$
6,175,000
 
 
$
697,000
 
 
$
-
 
 
 
Fair value measurement at reporting date using
 
Description
 
Total
December
 
31,
2020
 
 
 
 
 
 
 
 
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
 
 
 
 
 
 
 
 
 
 
Significant Other
Observable Inputs
(Level 2)
 
 
 
 
 
 
Significant
Unobservable Inputs
(Level 3)
 
 
 
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash equivalents:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market mutual funds
 
$
 
 
 
 
 
1,496,000
 
 
$
1,496,000
 
 
$
-
 
 
$
-
 
US T-bills
 
 
2,900,000
 
 
 
2,900,000
 
 
 
-
 
 
 
-
 
Marketable securities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate debt securities
 
 
613,000
 
 
 
-
 
 
 
613,000
 
 
 
-
 
Marketable equity securities
 
 
2,793,000
 
 
 
2,793,000
 
 
 
-
 
 
 
-
 
Total assets
 
$
7,802,000
 
 
$
7,189,000
 
 
$
613,000
 
 
$
-
 
 
Carrying amount is the estimated fair value for corporate debt securities and time deposits based on a market-based approach using observable (Level 2) inputs such as prices of similar assets in active markets.