Total

Level 1

Level 2

Level 3

Cash equivalents:

Certificates of deposit

$

24,000

$

—

$

24,000

$

—

Commercial paper

15,352

—

15,352

—

Money market funds

12,743

12,743

—

—

Total cash equivalents

$

52,095

$

12,743

$

39,352

$

—

Marketable debt securities, available-for-sale:

Commercial paper

$

15,781

$

—

$

15,781

$

—

Certificates of deposit

7,477

—

7,477

—

U.S. government securities

4,971

—

4,971

—

Corporate bonds

644

—

644

—

Total Marketable debt securities, available-for-sale

$

28,873

$

—

$

28,873

$

—

Marketable debt securities, available-for-sale, net of
   current portion:

U.S. government securities

$

6,795

$

—

$

6,795

$

—

Corporate bonds

6,632

—

6,632

—

Asset backed securities

2,954

—

2,954

—

Non-U.S. government securities

412

—

412

—

Total Marketable debt securities, available-for-sale,
   net of current portion

$

16,793

$

—

$

16,793

$

—