Mills Corporation's balance sheet included the following information:

Accounts Receivable $520,000
Less: Allowance for Doubtful Accounts 67,000
Accounts Receivable, Net of Allowance $453,000

If the Allowance account had a credit balance of $28,500 immediately before the year-end adjustment for bad debts and no accounts were written-off or allowed for during the year, what was the amount of Bad Debt Expense recognized during the year?