In millions, except per share items | Dec-31-19 | Dec-31-18 | Dec-05-18 | Dec-31-17 | Dec-05-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| 10-K | 10-K | 8-K | 10-K | 8-K | 10-K | 10-K | 10-K |
Revenues: | | | | | | | | |
Revenue, net | 65.9 | 65.9 | 65.9 | 60.2 | 60.2 | 63.0 | 44.3 | 33.7 |
Revenue, net growth | 0.0% | 9.4% | 9.4% | -4.5% | | 42.4% | 31.1% | 85.1% |
Costs and expenses: | | | | | | | | |
Cost of revenues | 42.4 | 43.5 | | 32.8 | | 28.3 | | |
Selling, general and administrative expenses | 20.8 | 23.4 | 23.4 | 19.9 | 19.9 | 15.0 | 11.3 | 6.0 |
Product development and research expenses | 10.8 | 14.1 | 14.1 | 19.3 | 19.3 | 17.1 | 13.2 | 6.9 |
Total costs and expenses | 73.9 | 81.0 | 81.0 | 72.0 | 72.0 | 60.5 | 47.4 | 29.8 |
Operating loss | -8.0 | -15.1 | -15.1 | -11.8 | -11.8 | 2.5 | -3.2 | 3.9 |
Operating margin | -12.2% | -22.9% | -22.9% | -19.6% | -19.6% | 4.0% | -7.2% | 11.6% |
|
Other income (expense): | | | | | | | | |
Foreign currency exchange gain (loss) | -1.5 | -3.4 | | 7.7 | | -0.9 | 0.1 | |
Interest and other expense, net | | | | | | | -13.4 | -0.8 |
Gain on debt restructuring | -0.9 | | | | | | | |
Change in the fair value of derivative liabilities | | | | | | | 23.1 | 2.3 |
Loss before income tax expense | -25.0 | -36.3 | -36.3 | -15.3 | -15.3 | -11.7 | 6.7 | 5.4 |
Income tax (benefit) expense | 0.1 | -0.1 | | -0.1 | -0.1 | 0.3 | 0.0 | 0.2 |
Tax rate | | 0.2% | 0.0% | 0.6% | 0.6% | | 0.5% | 3.2% |
Loss attributable to common shareholders | | | -36.3 | | -15.2 | | | |
|
Loss per share | | | | | | | | |
Basic loss per share (in dollars per share) | ($0.47) | ($0.68) | ($0.68) | ($0.28) | ($0.28) | ($0.23) | $0.13 | $0.11 |
Diluted loss per share (in dollars per shares) | ($0.47) | ($0.68) | ($0.68) | ($15,191,000.00) | ($0.28) | ($0.23) | ($0.07) | $0.09 |
|
Weighted average shares of common stock outstanding: | | | | | | | | |
Basic (in shares) | 53.8 | 53.6 | 53.6 | 53.3 | 53.3 | 53.1 | 52.9 | 49.8 |
Diluted (in shares) | 53.8 | 53.6 | 53.6 | 53.3 | 53.3 | 53.1 | 67.1 | 64.2 |