Amortized Cost

Unrealized Gains

Unrealized Losses

Fair Value

U.S. government agency securities and treasuries

$

100,555

$

—

$

1,159

$

99,396

Corporate debt securities

41,615

—

774

40,841

Total securities with a maturity of one year or less

$

142,170

$

—

$

1,933

$

140,237

U.S. government agency securities and treasuries

—

Corporate debt securities

3,442

—

124

3,318

Total securities with a maturity of greater than one year

$

3,442

$

—

$

124

$

3,318

Total available-for-sale securities

$

145,612

$

—

$

2,057

$

143,555