Three Months Ended June 30,

Six Months Ended June 30,

2022

2021

2022

2021

Interest income

$

3,333

$

2,770

$

6,794

$

5,052

Amortization of premium on available-for-sale securities

(1,232

)

(1,113

)

(2,580

)

(1,926

)

Gain (loss) on deferred compensation plan investments

(5,085

)

1,862

(7,277

)

3,039

Foreign currency exchange gain (loss)

400

(388

)

350

(373

)

Charitable contributions

(2,500

)

(100

)

(3,000

)

(200

)

Other

(8

)

-

(13

)

26

Total

$

(5,092

)

$

3,031

$

(5,726

)

$

5,618