On January $1,2023,$ L Corporation acquired all the common stock of S Company for $$300,000.$ On that date, S$\text{'}$s Identifiable net assets had a fair value of $$250,000.$ The assets acquired in the purchase of $5$ are considered to be a separate reporting unit of L Corporation. The carrying value of S$\text{'}$s net assets at December $31,2023,$ Is $$310,000.$ The fair value of the reporting unit is determined to be $260,000$Required:$1)$ Explain how goodwill is tested for impairment for a reporting unit$\mathrm{.}2)$ Determine the amount, if any, of impairment loss to be recognized at December $31,2023$