Olson Corp. reported the following in the Current Assets section of its December 31, 2017, balance sheet:

12/31/17 12/31/16 Accounts receivable, net of allowances of $4,910 and $2,820, respectively

12/31/2017 $54,040

12/31/2018 $46,590

During 2017, Olson recorded $80,680 of sales on credit and wrote off $3,980 of uncollectible accounts.

Determine the amount of bad debts expense for 2017.