In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
Net income | -61.9 | -21.6 | -23.7 | -37.4 | -34.8 | -20.5 | -15.6 | -9.9 |
Depreciation and amortization [+] | 2.0 | 1.7 | 0.5 | 0.6 | 0.3 | 0.2 | 0.2 | 0.2 |
Depreciation | 0.2 | 0.0 | 0.5 | 0.6 | 0.3 | 0.2 | 0.2 | 0.2 |
Amortization of intangible assets | 1.7 | 1.7 | | | | | | |
Asset impairment charges | 28.8 | | | | | | | |
Stock-based compensation | 12.8 | 1.3 | 3.0 | 4.7 | 3.2 | 0.6 | 0.2 | 0.2 |
Deferred taxes | -0.1 | -0.1 | | | | | | |
Change in working capital [+] | -2.5 | -0.1 | 4.0 | 2.6 | -1.1 | -0.3 | 3.4 | 3.2 |
Accounts receivable | -0.3 | 1.2 | 0.6 | 3.4 | -4.2 | | 0.1 | 0.1 |
Inventories | -0.4 | -1.2 | 0.0 | -0.2 | -0.6 | -0.5 | 0.1 | -0.2 |
Other current assets | -0.4 | 0.8 | 0.4 | 0.1 | -0.5 | -1.0 | 0.0 | -0.1 |
Accounts payable | | | -0.5 | 0.1 | 0.6 | 0.0 | 0.4 | |
Deferred revenues | | | | -0.2 | 0.4 | 0.1 | | |
Other | -1.5 | -1.0 | 3.5 | -0.6 | 3.2 | 1.0 | 2.8 | 3.4 |
Other operating activities | 5.7 | 10.3 | -6.6 | 0.1 | 1.7 | 0.7 | 0.4 | -3.6 |
Cash from operations | -15.4 | -8.6 | -22.9 | -29.4 | -30.6 | -19.4 | -11.4 | -9.9 |
|
Capital expenditures [+] | -0.4 | -0.4 | -0.2 | -1.3 | -1.0 | -0.4 | -0.1 | -0.3 |
Purchases of property and equipment | -0.4 | -0.4 | -0.2 | -1.3 | -1.0 | -0.4 | -0.1 | -0.3 |
Sales of property and equipment | | | | | | | 0.0 | |
Acquisitions | 22.4 | -2.0 | | | | | | |
Sales of short-term investments, net [+] | | | 2.6 | 20.8 | -20.8 | 6.6 | 2.9 | -7.7 |
Purchases of short-term investments | | | | -9.1 | -94.6 | -18.9 | -18.6 | -12.4 |
Sales of short-term investments | | | 2.6 | 29.9 | 73.8 | 25.5 | 21.5 | 4.8 |
Other cash from investing | -20.1 | | | | | | | |
Cash from investing | 1.9 | -2.4 | 2.4 | 19.5 | -21.9 | 6.2 | 2.8 | -7.9 |
|
Issuance of common stock, net | | | 23.4 | 9.8 | | 67.2 | | |
Option exercises | 0.4 | | 0.0 | 0.2 | 0.6 | 1.1 | 0.1 | 0.0 |
Financing costs | -3.2 | -0.1 | | | | | | |
Other cash from financing | 30.5 | 11.0 | -10.0 | 0.4 | 1.2 | 16.6 | 5.1 | 22.2 |
Cash from financing | 33.3 | 11.1 | 13.4 | 10.0 | 0.6 | 82.8 | 5.1 | 22.2 |
|
Free cash flow | -15.7 | -8.9 | -23.1 | -30.7 | -31.7 | -19.7 | -11.5 | -10.2 |
Per share (diluted) | ($1.27) | ($2.29) | ($4.90) | ($16.13) | ($1.89) | ($4.67) | ($20.12) | ($19.15) |
|
Cash paid for interest | 0.3 | | 0.7 | 0.6 | 0.6 | 0.5 | 0.5 | 0.2 |
Cash paid for income taxes | 0.1 | 0.0 | | | | | | |