| In millions, except per share items | Dec-31-13 | Dec-31-12 | Dec-31-11 | Dec-31-10 | Dec-31-09 |
| | 10-K | 10-K | 10-K | 10-K/A | 10-K |
| Net sales | | | | | |
| Revenue, Net, Total | 47.2 | 43.0 | 39.9 | 31.1 | |
| Revenue, Net, Total growth | 9.7% | 7.9% | 28.3% | | |
| Cost of sales (exclusive of items shown separately below) | 21.7 | 19.1 | 16.9 | 12.9 | |
| Gross profit | 25.5 | 24.0 | 22.9 | 18.2 | |
| Gross margin | 54.0% | 55.7% | 57.5% | 58.6% | |
| |
| Operating expenses | | | | | |
| Selling expenses | 2.3 | 1.4 | 1.6 | 1.1 | |
| Staff expenses | 16.4 | 15.5 | 14.6 | 8.3 | |
| Occupancy expenses | 12.7 | 10.0 | 7.2 | 4.7 | |
| General and administrative | 4.0 | 3.3 | 2.7 | 1.4 | |
| New store expenses | 0.4 | 0.5 | 0.8 | 0.8 | |
| Depreciation and amortization | 2.6 | 1.9 | 1.5 | 0.9 | |
| Loss on impairment of assets | 1.3 | 1.9 | 0.8 | | |
| Loss on disposal of property and equipment | 1.1 | 0.0 | 0.0 | 0.0 | |
| Total operating expenses | 40.9 | 34.5 | 29.1 | 17.2 | |
| Loss from operations | -15.4 | -10.5 | -6.2 | 1.0 | |
| Operating margin | -32.6% | -24.5% | -15.6% | 3.2% | |
| |
| Other income (expense) | | | | | |
| Interest expense | -0.4 | | | | |
| Interest and other income | 0.0 | 0.0 | 0.0 | 0.0 | |
| Abandoned projects | -0.1 | -0.1 | -0.1 | | |
| Change in fair value of warrant liability | 0.1 | 0.3 | 3.7 | | |
| Nonoperating Income (Expense) | -0.4 | 0.2 | 3.7 | -0.2 | |
| Net loss attributable to the controlling and non-controlling interests | -18.2 | -10.3 | -2.5 | 0.8 | |
| Less: Net loss attributable to non-controlling interests | 3.0 | 2.7 | 1.1 | | |
| Net loss attributable to stockholders | -15.3 | -7.7 | -1.5 | 0.8 | |
| |
| Net loss per common share, basic and diluted (in dollars per share) | ($1.32) | ($1.12) | ($0.27) | $0.20 | |
| |
| Weighted average number of common shares outstanding, basic and diluted | 11.6 | 6.9 | 5.6 | 3.9 | |