On January 1, year 15, Hart, Inc. retired its 15-year bonds of $500,000 par value for 102. They were originally issued on January 1, year 3 at 98 with a maturity date of January 1, year 18. The bond issue costs relating to this transaction were $20,000. Hart amortizes discounts, premiums, and bond issue costs using the straight-line method. What amount of gain or loss should Hart, Inc. record