E8-6 On December 31, 2016, Russell NV estimated that 2% of its net sales of 360,000 will become uncollectible. The company recorded this amount as an addition to Allowance for Doubtful Accounts. On May 11, 2017, Russell NV determined that the B. Vetter account was uncollectible and wrote off 1,100. On June 12, 2017, Vetter paid the amount previ- ously written off