Last year, Katt Co. reduced the carrying amount of its long-lived assets used in operations from $120,000 to $100,000, in connection with its annual impairment review. During the current year, Katt determined that the fair value of the same assets had increased to $130,000. Under U.S. GAAP, what amount should Katt record as restoration of previously recognized impairment loss in the current years financial statements?