| Mar 31,
2012 | Mar 31,
2013 | Mar 31,
2014 | Mar 31,
2015 |
|---|
| Cash and deposits | - | 465 | 445 | 520 |
|---|
| Notes and accounts receivable - trade | - | 34,612 | 35,307 | 37,490 |
|---|
| Inventories | - | 11,587 | 14,430 | 14,356 |
|---|
| Deferred tax assets | - | 523 | 626 | 574 |
|---|
| Accounts receivable - other | - | 4,700 | 5,050 | 4,846 |
|---|
| Other | - | 11 | 12 | 13 |
|---|
| Allowance for doubtful accounts | - | -854 | -868 | -860 |
|---|
| Current assets | - | 51,168 | 55,046 | 56,347 |
|---|
| Buildings and structures | - | 5,253 | 5,970 | 6,028 |
|---|
| Accumulated depreciation | - | -3,117 | -3,260 | -3,430 |
|---|
| Buildings and structures, net | - | 2,136 | 2,710 | 2,597 |
|---|
| Machinery, equipment and vehicles | - | 236 | 419 | 444 |
|---|
| Accumulated depreciation | - | -202 | -209 | -232 |
|---|
| Machinery, equipment and vehicles, net | - | 33 | 209 | 212 |
|---|
| Land | - | 3,015 | 3,015 | 3,015 |
|---|
| Other | - | 1,144 | 856 | 938 |
|---|
| Accumulated depreciation | - | -601 | -643 | -690 |
|---|
| Other, net | - | 543 | 212 | 247 |
|---|
| Property, plant and equipment | - | 4,994 | 5,473 | 5,392 |
|---|
| Intangible assets | - | 190 | 208 | 175 |
|---|
| Investment securities | - | 5,344 | 5,139 | 6,008 |
|---|
| Shares of subsidiaries and associates | - | 445 | 565 | 516 |
|---|
| Long-term loans receivable | - | 41 | 32 | 23 |
|---|
| Long-term loans receivable from subsidiaries and associates | - | 733 | 633 | 384 |
|---|
| Other | - | 516 | 134 | 131 |
|---|
| Allowance for doubtful accounts | - | -621 | -304 | -346 |
|---|
| Investments and other assets | - | 7,871 | 7,748 | 8,413 |
|---|
| Non-current assets | - | 13,056 | 13,430 | 13,981 |
|---|
| Assets | - | 64,224 | 68,476 | 70,328 |
|---|
| Notes and accounts payable - trade | - | 47,045 | 39,836 | 40,411 |
|---|
| Electronically recorded obligations - operating | - | - | 8,742 | 8,931 |
|---|
| Short-term loans payable | - | 2,620 | 3,520 | 3,070 |
|---|
| Income taxes payable | - | 244 | 307 | 62 |
|---|
| Provision for bonuses | - | 182 | 185 | 189 |
|---|
| Provision for sales returns | - | 109 | 126 | 123 |
|---|
| Other | - | 200 | 217 | 200 |
|---|
| Current liabilities | - | 52,366 | 55,204 | 55,268 |
|---|
| Long-term loans payable | - | 516 | 700 | 1,340 |
|---|
| Deferred tax liabilities | - | 1,705 | 1,593 | 1,677 |
|---|
| Provision for directors' retirement benefits | - | 136 | 154 | 159 |
|---|
| Net defined benefit liability | - | - | 709 | 915 |
|---|
| Other | - | 32 | 38 | 66 |
|---|
| Non-current liabilities | - | 3,051 | 3,117 | 3,937 |
|---|
| Liabilities | - | 55,418 | 58,322 | 59,205 |
|---|
| Capital stock | - | 1,751 | 2,486 | 2,486 |
|---|
| Capital surplus | - | 1,486 | 1,506 | 1,506 |
|---|
| Retained earnings | - | 3,324 | 3,978 | 4,262 |
|---|
| Treasury shares | - | -261 | -137 | -137 |
|---|
| Shareholders' equity | - | 6,301 | 7,834 | 8,118 |
|---|
| Valuation difference on available-for-sale securities | - | 2,504 | 2,319 | 3,004 |
|---|
| Remeasurements of defined benefit plans | - | - | -47 | -131 |
|---|
| Valuation and translation adjustments | - | 2,504 | 2,319 | 3,004 |
|---|
| Minority interests | - | 65 | 58 | 1 |
|---|
| Net assets | 7,496 | 8,805 | 10,154 | 11,123 |
|---|
| Liabilities and net assets | - | 64,224 | 68,476 | 70,328 |
|---|