An analysis of an entity's $150,000 accounts receivable at year end resulted in a $5,000 ending balance for its allowance for uncollectible accounts and a bad debt expense of $2,000. During the past year, recoveries on bad debts previously written off were correctly recorded at $500. If the beginning balance in the allowance for uncollectible accounts was $4,700, what was the amount of accounts receivable written off as uncollectible during the year?