| Dec 31,
2014 | Dec 31,
2015 | Dec 31,
2016 | Dec 31,
2017 | Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Profit (loss) before income taxes | 517 | 849 | -110 | -439 | -274 | -73 | -177 | -186 | -288 | -419 |
|---|
| Depreciation | 36 | 33 | 25 | 17 | 10 | 2 | 2 | 2 | 6 | 1 |
|---|
| Impairment losses | - | 12 | 21 | 41 | 57 | 17 | 2 | 15 | 14 | - |
|---|
| Loss on cancellation of rental contracts | - | - | - | 24 | - | - | - | - | - | 31 |
|---|
| Amortization of goodwill | - | - | - | - | - | 1 | 4 | 8 | 8 | 19 |
|---|
| Increase (decrease) in allowance for doubtful accounts | 110 | 19 | - | - | -1 | -1 | -1 | -2 | 1 | -1 |
|---|
| Interest and dividend income | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 |
|---|
| Interest expenses | 7 | 7 | 10 | 7 | 4 | 3 | 1 | 0 | 0 | 0 |
|---|
| Gain on reversal of share acquisition rights | - | - | -0 | -1 | -0 | -0 | -6 | - | -6 | -1 |
|---|
| Decrease (increase) in trade receivables | -312 | 144 | 108 | 49 | 44 | 11 | -8 | -1 | 10 | 10 |
|---|
| Decrease (increase) in inventories | -12 | 52 | 11 | -0 | 23 | 11 | 12 | -5 | -0 | -6 |
|---|
| Increase (decrease) in trade payables | 130 | -79 | -44 | -26 | -36 | 24 | -16 | 1 | 8 | -7 |
|---|
| Increase (decrease) in advances received | -28 | -26 | 3 | -3 | 1 | 2 | -2 | -0 | 3 | -3 |
|---|
| Increase (decrease) in accounts payable - other | 20 | -14 | -12 | -12 | -4 | 7 | -10 | 4 | 8 | 57 |
|---|
| Increase (decrease) in accrued expenses | 15 | 11 | 8 | -35 | -24 | -1 | -12 | 4 | 5 | 5 |
|---|
| Other, net | -61 | 10 | -110 | 23 | 36 | 4 | -2 | -12 | 16 | 15 |
|---|
| Subtotal | 426 | 1,017 | -57 | -257 | -163 | 4 | -169 | -194 | -216 | -299 |
|---|
| Interest and dividends received | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|---|
| Interest paid | -7 | -7 | -9 | -6 | -4 | -3 | -1 | -0 | -0 | -0 |
|---|
| Income taxes paid | -61 | -348 | -314 | -5 | -8 | -2 | -2 | -1 | -0 | -1 |
|---|
| Income taxes refund | - | - | 21 | 134 | 4 | 1 | 0 | 1 | 0 | - |
|---|
| Net cash provided by (used in) operating activities | 358 | 663 | -404 | -158 | -170 | 1 | -172 | -194 | -216 | -300 |
|---|
| Purchase of property, plant and equipment | -6 | -27 | -26 | -25 | -2 | -7 | -1 | -28 | -2 | -6 |
|---|
| Proceeds from refund of leasehold and guarantee deposits | 7 | - | 29 | 48 | 18 | 1 | 10 | 0 | - | 6 |
|---|
| Payments of leasehold and guarantee deposits | -47 | -45 | -15 | -11 | -6 | -2 | -37 | -7 | -3 | -6 |
|---|
| Net cash provided by (used in) investing activities | -145 | -34 | -341 | 146 | 104 | -23 | -85 | -19 | -5 | -7 |
|---|
| Proceeds from long-term borrowings | 340 | 710 | 300 | - | - | - | - | - | - | 50 |
|---|
| Repayments of long-term borrowings | -257 | -200 | -362 | -305 | -182 | -160 | -132 | -17 | -5 | -5 |
|---|
| Proceeds from issuance of share acquisition rights | - | 2 | - | - | 4 | - | 3 | - | 3 | 1 |
|---|
| Proceeds from issuance of shares | - | - | - | - | 284 | 87 | - | - | 104 | 301 |
|---|
| Net cash provided by (used in) financing activities | 139 | 638 | -49 | -291 | 156 | -73 | -130 | -17 | 102 | 348 |
|---|
| Net increase (decrease) in cash and cash equivalents | 352 | 1,267 | -794 | -302 | 90 | -95 | -387 | -230 | -120 | 40 |
|---|