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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Summary of Investments Measured at Fair Value
The following is a summary of our investments measured at fair value at March 31, 2020:
 
 
Total
 
Level 1
 
Level 2
 
Level 3
 
 
(In thousands)
Equity securities
 
 
 
 
 
 
 
 
Mutual funds
 
$
4,962

 
$
—

 
$
4,962

 
$
—

Available-for-sale securities
 
 
 
 
 
 
 
 
U.S. Government and agency securities
 
2,315

 
2,315

 
—

 
—

Corporate bonds
 
2,650

 
1,271

 
1,379

 
—

Asset-backed securities and collateralized mortgage obligations
 
58

 
—

 
58

 
—

Total
 
$
9,985

 
$
3,586

 
$
6,399

 
$
—

The following is a summary of our investments measured at fair value at December 31, 2019:
 
 
Total
 
Level 1
 
Level 2
 
Level 3
 
 
(In thousands)
Equity securities
 
 
 
 
 
 
 
 
Equities
 
$
2,172

 
$
—

 
$
2,172

 
$
—

Mutual funds
 
5,685

 
—

 
5,685

 
—

Available-for-sale securities
 
 
 
 
 
 
 
 
U.S. Government and agency securities
 
2,044

 
2,044

 
—

 
—

Corporate bonds
 
3,483

 
1,855

 
1,628

 
—

Asset-backed securities and collateralized mortgage obligations
 
79

 
—

 
79

 
—

Total
 
$
13,463

 
$
3,899

 
$
9,564

 
$
—