The following table sets forth reportable segment and geographical information: Segment profit represents revenue less direct and allocable operating expenses.  Year Ended April 30, (Dollars in thousands) 2003 2002 2001 Net sales:  U.S. retail market $ 889,871 $323,636 $313,598 Special markets 421,873 363,512 337,644 Total net sales  $1,311,744 $687,148 $651,242 Segment profit: U.S. retail market $ 197,709 $ 68,691 $ 59,502  Special markets  53,960 42,788 36,189 Total segment profit  $ 251,669 $111,479 $ 95,691 Interest income 2,039 2,181 2,918 Interest expense  (8,752) (9,207)  (7,787) Amortization expense (1,817) (4,625) (4,400) Restructuring costs (2,537) — (2,152) Merger and integration costs (10,511) (5,031) — Corporate administrative expenses (72,110) (46,681) (39,443) Other unallocated (expenses) income (2,591) 2,082 (335) Income before income taxes and cumulative effect of  change in accounting method $ 155,390 $ 50,198 $ 44,492 Net sales: Domestic $1,190,190 $590,327 $557,921 International 121,554 96,821 93,321 Total net sales $1,311,744 $687,148 $651,242 Assets: Domestic $1,511,553 $438,644 $402,021 International 103,854 86,248 77,083 Total assets $1,615,407 $524,892 $479,104 Long-lived assets: Domestic $1,109,859 $211,380 $210,222 International 38,888 33,699 33,640 Total long-lived assets $1,148,747 $245,079 $243,862 30