| 2012/03 | 2013/03 | 2014/03 | 2015/03 | 2016/03 | 2017/03 | 2018/03 | 2019/03 | 2020/03 | 2021/03 | 2022/03 | 2023/03 | 2024/03 | 2025/03 | |
| 売上高 | 313,558 | 342,727 | 382,724 | 377,825 | 414,958 | 403,908 | 417,310 | 448,758 | 472,402 | 421,619 | 403,275 | 458,622 | 479,488 | 462,982 |
| 売上成長率（％） | - | |||||||||||||
| 売上原価 | - | - | - | 349,874 | 375,163 | 357,484 | 366,252 | 397,709 | 424,733 | 295,596 | 298,411 | 342,437 | 317,213 | 303,013 |
| 売上総利益 | - | - | - | 27,950 | 39,794 | 46,424 | 51,057 | 51,049 | 47,669 | 26,620 | 5,975 | -4,845 | 20,012 | 17,071 |
| 売上総利益率（％） | - | - | - | |||||||||||
| 営業利益率 (%) | - | - | - | |||||||||||
| 営業費用 | - | - | - | 15,685 | 16,429 | 18,483 | 20,473 | 21,831 | 22,903 | 16,387 | 17,622 | 18,216 | 16,642 | 15,837 |
| 営業利益 | - | - | - | 12,265 | 23,364 | 27,941 | 30,584 | 29,217 | 24,765 | 15,584 | -7,459 | -18,759 | 8,500 | 7,587 |
| 経常（税引前）利益 | 3,311 | 4,612 | 7,989 | 11,998 | 21,801 | 26,174 | 28,463 | 28,862 | 23,884 | 13,063 | -8,340 | -18,483 | 6,291 | 3,725 |
| 経常（税引前）利益率（％） | 1.1 | 1.3 | 2.1 | 3.2 | 5.3 | 6.5 | 6.8 | 6.4 | 5.1 | 3.1 | -2.1 | -4 | 1.3 | 0.8 |
| 法人税等合計 | - | - | - | 3,243 | 7,511 | 7,511 | 6,646 | 8,755 | 7,524 | 1,438 | -3,551 | 4,449 | 899 | 783 |
| 実効税率（％） | - | - | - | |||||||||||
| 純利益 | 719 | 509 | 1,664 | 7,790 | 10,661 | 17,916 | 21,395 | 19,688 | 16,213 | 7,640 | -8,557 | -25,619 | 4,505 | 912 |
| 純利益率（％） | ||||||||||||||
| 一株あたり利益 | 4.82 | 4.56 | 5.51 | 8.59 | 12.18 | 20.96 | 127.48 | 117.03 | 97.89 | 55.33 | -44.93 | -164.32 | 25.58 | 5.46 |
| 希薄化後一株あたり利益 | 1.81 | 2.56 | 5.17 | 8.56 | 12.18 | 20.96 | 127.48 | 117.03 | 97.89 | 55.33 | -44.93 | -164.32 | 25.58 | 5.46 |
| 配当性向（%） | - | - | - | |||||||||||
| 一株あたり配当金 | - | - | - | 1 | 2 | 3 | 18 | 24 | 24 | 18 | 20 | 14 | 14 | 14 |
| EBITDA | - | - | - | |||||||||||
| EBITDAマージン（％） | - | - | - |