Three Months Ended September 30,

Nine Months Ended September 30,

2022

2021

2022

2021

Interest income

$

3,584

$

3,050

$

10,378

$

8,102

Amortization of premium on available-for-sale securities

(1,102

)

(1,305

)

(3,682

)

(3,231

)

Gain (loss) on deferred compensation plan investments

(1,330

)

(399

)

(8,607

)

2,640

Foreign currency exchange gain (loss)

612

(171

)

962

(544

)

Charitable contributions

(1,700

)

(400

)

(4,700

)

(600

)

Other

(59

)

18

(71

)

44

Total

$

5

$

793

$

(5,720

)

$

6,411