Molina Company had a $700 credit balance in Allowance for Doubtful Accounts at December 31, 2018, before the current year's provision for uncollectible accounts. An aging of the accounts receivable revealed the following: Estimated Percentage Uncollectible Current Accounts $120,000 1 % 1-30 days past due 20,000 3 % 31-60 days past due 10,000 6 % 61-90 days past due 10,000 12 % Over 90 days past due 8,000 30% Total Accounts Receivable $168,000