Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Tables)

v3.20.1
FAIR VALUE MEASUREMENTS (Tables)
 3 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Schedule of Investments by Significant Category Included in Cash Equivalents
Investments by significant category included in cash equivalents at the end of each period were as follows (in thousands):
  March 31, 2020 December 31, 2019
 
Fair Value Level1
Adjusted Cost Gross Unrealized Losses Fair Value Adjusted Cost Gross Unrealized Losses Fair Value
Money market funds Level 1 $ 1,017    $ —    $ 1,017    $ 11,659    $ —    $ 11,659   
Time deposits Level 2 14,860    —    14,860    13,544    —    13,544   
Municipal debt securities Level 2 14,059    (7)   14,052    347    —    347   
Corporate debt securities Level 2 51,895    (99)   51,796    56,784    (19)   56,765   
Total investments $ 81,831    $ (106)   $ 81,725    $ 82,334    $ (19)   $ 82,315   

1 FASB Topic 820, Fair Value Measurements, establishes a fair value hierarchy that requires the use of observable market data, when available, and prioritizes the inputs to valuation techniques used to measure fair value in the following categories:
Level 1: Quoted market prices in active markets for identical assets or liabilities.
Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data.
Level 3: Unobservable inputs that are not corroborated by market data.