| （単位：%） | 1Q12 | 2Q12 | 3Q12 | 1Q13 | 2Q13 | 3Q13 | 4Q13 | 1Q14 | 2Q14 | 3Q14 | 4Q14 | 1Q15 | 2Q15 | 3Q15 | 4Q15 | 1Q16 | 2Q16 | 3Q16 | 4Q16 | 1Q17 | 2Q17 | 3Q17 | 4Q17 | 1Q18 | 2Q18 | 3Q18 | 4Q18 | 1Q19 | 2Q19 | 3Q19 | 4Q19 | 1Q20 | 2Q20 | 3Q20 | 4Q20 | 1Q21 | 2Q21 | 3Q21 | 4Q21 | 1Q22 | 2Q22 | 3Q22 | 4Q22 | 1Q23 | 2Q23 | 3Q23 | 4Q23 | 1Q24 | 2Q24 | 3Q24 | 4Q24 | 1Q25 | 2Q25 | 3Q25 | 4Q25 | 1Q26 | 2Q26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 売上高 | 342,737 | 362,638 | 347,009 | 358,151 | 382,175 | 359,808 | 376,323 | 357,046 | 392,241 | 372,511 | 396,838 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 売上成長率（％） | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |||||||
| 売上原価 | 249,861 | 263,134 | 251,761 | 262,514 | 279,255 | 262,494 | 274,434 | 263,340 | 286,883 | 272,074 | 287,841 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 売上総利益 | 92,876 | 99,504 | 95,248 | 95,637 | 102,920 | 97,314 | 101,889 | 93,706 | 105,358 | 100,437 | 108,997 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 売上総利益率（％） | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||
| 営業利益 | 12,202 | 16,270 | 11,606 | 10,472 | 14,447 | 8,150 | 11,107 | 6,249 | 5,857 | 6,397 | 11,325 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 営業利益率 (%) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||
| 経常（税引前）利益 | 11,643 | 15,821 | 11,181 | 10,080 | 15,712 | 7,910 | 10,937 | 6,205 | 5,494 | 6,140 | 11,010 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 経常（税引前）利益率（％） | 3.4 | 4.4 | 3.2 | 2.8 | 4.1 | 2.2 | 2.9 | 1.7 | 1.4 | 1.6 | 2.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 法人税等合計 | 4,907 | 6,674 | 4,638 | 4,225 | 6,608 | 3,288 | 4,734 | 13,036 | 2,676 | 2,952 | 5,140 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 実効税率（％） | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||
| 純利益 | 6,736 | 9,147 | 6,543 | 5,855 | 9,104 | 4,622 | 6,203 | -6,831 | 2,818 | 3,188 | 5,870 | 3,879 | 6,603 | 13,206 | 6,932 | 4,430 | 6,284 | 5,882 | 8,448 | 4,109 | 5,992 | 6,015 | 6,804 | 3,016 | 9,511 | 6,542 | 6,010 | 6,269 | 7,571 | 4,970 | 6,729 | 2,567 | 2,005 | 11,152 | 9,215 | 3,360 | 4,555 | 2,574 | 9,504 | 7,328 | 10,129 | -3,231 | 12,603 | 11,081 | 12,322 | 11,017 | 15,294 | 11,585 | 14,480 | 8,966 | 15,432 | 12,803 | 16,896 | 11,161 | 15,522 | 12,002 | 17,872 |
| 純利益率（％） | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |