| Mar 31,
2019 | Mar 31,
2020 | Mar 31,
2021 | Mar 31,
2022 | Mar 31,
2023 | Mar 31,
2024 |
|---|
| Profit (loss) before tax | 65,261 | 15,073 | 15,352 | 43,934 | 55,889 | 72,513 |
|---|
| Depreciation and amortization | 64,318 | 64,629 | 63,056 | 66,990 | 69,493 | 72,350 |
|---|
| Impairment losses (reversal of impairment losses) | 6,061 | 15,725 | 428 | 3,540 | 3,403 | 10,337 |
|---|
| Finance income and finance costs | 117 | -35 | 529 | -740 | 800 | 469 |
|---|
| Share of loss (profit) of investmenents accounted | -1,093 | -1,457 | -263 | -486 | -880 | -833 |
|---|
| Increase (decrease) in provisions | -1,847 | -908 | -1,165 | 619 | 11,536 | -10,478 |
|---|
| Increase (decrease) in retirement benefit | 1,004 | 6,866 | -183 | -5,192 | -5,454 | -1,225 |
|---|
| Decrease (increase) in retirement benefit | -248 | -7,134 | -11,557 | -10,622 | -204 | -30,944 |
|---|
| Decrease (increase) in inventories | -8,757 | -10,652 | 14,598 | -32,556 | -8,733 | -1,207 |
|---|
| Decrease (increase) in trade and other receivables | -962 | 43,624 | -10,741 | -13,071 | -21,437 | 11,239 |
|---|
| Increase (decrease) in trade and other payables | 7,479 | -53,476 | 13,230 | 20,413 | 14,788 | 23,399 |
|---|
| Other | -1,910 | 9,281 | 17,768 | 11,089 | -1,606 | 29,972 |
|---|
| Subtotal | 129,421 | 81,536 | 101,051 | 83,918 | 117,594 | 175,594 |
|---|
| Interest received | 1,598 | 1,469 | 1,024 | 1,361 | 1,786 | 3,320 |
|---|
| Dividends received | 1,949 | 1,954 | 1,790 | 2,288 | 1,995 | 2,180 |
|---|
| Interest paid | -3,616 | -3,442 | -3,328 | -2,907 | -3,997 | -6,698 |
|---|
| Income taxes paid | -25,206 | -19,205 | -8,781 | -17,622 | -39,099 | -19,934 |
|---|
| Net cash provided by (used in) operating activities | 104,147 | 62,312 | 91,757 | 67,039 | 78,279 | 154,461 |
|---|
| Purchase of property, plant and equipment | -71,172 | -79,867 | -55,248 | -42,684 | -55,783 | -58,746 |
|---|
| Proceeds from sale of property, plant and equipment | 2,186 | 1,574 | 1,887 | 1,383 | 4,348 | 4,440 |
|---|
| Purchase of intangible assets | - | - | - | - | -2,875 | -22,702 |
|---|
| Purchase of investment securities | -762 | -892 | -383 | -82 | -388 | -468 |
|---|
| Proceeds from sale of investment securities | 1,495 | 1,274 | 3,463 | 24,161 | 2,003 | 6,807 |
|---|
| Income for sales of shares of subsidiaries resulting in change in scope of consolidation | - | - | - | 6 | 65 | - |
|---|
| Other | -6,953 | -4,486 | -2,235 | -8,050 | 519 | -682 |
|---|
| Net cash provided by (used in) investing activities | -75,207 | -91,771 | -52,515 | -25,265 | -52,109 | -71,352 |
|---|
| Net increase (decrease) in short-term borrowings | 14,114 | 16,618 | -28,696 | -3,311 | -6,671 | -18,184 |
|---|
| Proceeds from long-term borrowings | 19,965 | 39,110 | 11,443 | 134,777 | 84,501 | 1,063 |
|---|
| Repayments of long-term borrowings | -35,264 | -11,754 | -28,915 | -143,624 | -90,399 | -15,845 |
|---|
| Proceeds from issuance of bonds | - | 20,000 | - | - | - | 20,000 |
|---|
| Redemption of bonds | - | -10,000 | - | -20,000 | - | -10,000 |
|---|
| Dividends paid to owners of parent | -15,092 | -15,092 | -8,232 | -5,488 | -7,203 | -12,005 |
|---|
| Dividends paid to non-controlling interests | -4,065 | -2,865 | -2,039 | -2,149 | -7,458 | -3,450 |
|---|
| Payments for acquisition of subsidiaries not resulting in change in scope of consolidation | -5,592 | -1,157 | -54 | -1,590 | -21 | -6,103 |
|---|
| Proceeds from sale of shares of subsidiaries not resulting in change in scope of consolidation-FinCF (IFRS) | - | - | - | - | 322 | - |
|---|
| Proceeds from sale and leaseback transactions | - | - | 955 | - | 112 | - |
|---|
| Other | -1,426 | -619 | -2,418 | -2,143 | -1,888 | -2,697 |
|---|
| Net cash provided by (used in) financing activities | -27,361 | 34,239 | -57,957 | -43,531 | -28,707 | -47,224 |
|---|
| Effect of exchange rate changes on cash and cash equivalents | -1,815 | -2,655 | 2,530 | 7,588 | 2,134 | 7,283 |
|---|
| Net increase (decrease) in cash and cash equivalents | -236 | 2,125 | -16,186 | 5,830 | -403 | 43,168 |
|---|