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Share-Based Payments (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of Stock-based Compensation Expense | Stock-based compensation costs included in the consolidated statements of operations are presented below:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
Cost of products | $ | 10 |  |  | $ | 20 |  |  | $ | 78 |
Cost of services | 134 |  |  | 220 |  |  | 237 |
Research and development | 1,815 |  |  | 3,478 |  |  | 5,017 |
Selling, general and administrative | 17,787 |  |  | 11,380 |  |  | 25,222 |
Discontinued operations | (1,380) |  |  | 3,852 |  |  | 5,742 |
Total | $ | 18,366 |  |  | $ | 18,950 |  |  | $ | 36,296 |
Schedule of Stock Option Activity | Stock option activity was as follows:
| Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (Years)
Balances at December 31, 2017 | 11,382,747 |  |  | $ | 28.99 |  |  | 7.32
Granted | 1,470,339 |  |  | 14.26 |  |  |
Exercised | (45,159) |  |  | (6.59) |  |  |
Forfeited | (929,596) |  |  | (21.48) |  |  |
Expired | (785,268) |  |  | (26.25) |  |  |
Balances at December 31, 2018 | 11,093,063 |  |  | 27.95 |  |  | 6.81
Granted | 1,556,575 |  |  | 6.52 |  |  |
Exercised | (19,887) |  |  | (3.17) |  |  |
Forfeited | (1,236,326) |  |  | (24.92) |  |  |
Expired | (2,371,143) |  |  | (38.53) |  |  |
Balances at December 31, 2019 | 9,022,282 |  |  | 21.94 |  |  | 6.10
Granted | 5,693,498 |  |  | 10.03 |  |  |
Exercised | (30,061) |  |  | (3.88) |  |  |
Forfeited | (976,324) |  |  | (15.47) |  |  |
Expired | (2,453,499) |  |  | (26.53) |  |  |
Balances at December 31, 2020 | 11,255,896 |  |  | 15.53 |  |  | 7.25
Exercisable at December 31, 2020 | 5,437,667 |  |  | 19.61 |  |  | 5.61
Summary of Information About Stock Options Outstanding | The following table summarizes additional information about stock options outstanding as of December 31, 2020:
|  |  |  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices |  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Life (Years) |  | Aggregate Intrinsic Value |  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Life (Years) |  | Aggregate Intrinsic Value
$ | 1.55 |  | — | $ | 5.95 |  |  | 3,259,685 |  |  | $ | 4.63 |  |  | 8.92 |  | $ | 18,157 |  |  | 1,271,310 |  |  | $ | 3.11 |  |  | 8.73 |  | $ | 9,018 |
$ | 6.06 |  | — | $ | 15.09 |  |  | 2,261,216 |  |  | 11.01 |  |  | 8.23 |  | 1,325 |  |  | 345,788 |  |  | 9.09 |  |  | 4.76 |  | 689 |
$ | 15.80 |  | — | $ | 20.94 |  |  | 3,028,309 |  |  | 18.85 |  |  | 7.38 |  | — |  |  | 1,216,258 |  |  | 19.82 |  |  | 5.62 |  | — |
$ | 21.13 |  | — | $ | 36.84 |  |  | 2,303,371 |  |  | 26.33 |  |  | 4.32 |  | — |  |  | 2,200,996 |  |  | 26.52 |  |  | 4.22 |  | — |
$ | 37.88 |  | — | $ | 47.35 |  |  | 403,315 |  |  | 42.26 |  |  | 4.01 |  | — |  |  | 403,315 |  |  | 42.26 |  |  | 4.01 |  | — |
|  |  |  | 11,255,896 |  |  | $ | 15.53 |  |  | 7.25 |  | $ | 19,482 |  |  | 5,437,667 |  |  | $ | 19.61 |  |  | 5.61 |  | $ | 9,707 |
The following table summarizes additional information about stock options outstanding as of December 31, 2019:
|  |  |  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices |  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Life (Years) |  | Aggregate Intrinsic Value |  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Life (Years) |  | Aggregate Intrinsic Value
$ | 3.17 |  | — | $ | 8.60 |  |  | 1,612,219 |  |  | $ | 6.40 |  |  | 8.08 |  | $ | 473 |  |  | 585,144 |  |  | $ | 5.61 |  |  | 5.95 |  | $ | 194 |
$ | 8.77 |  | — | $ | 20.68 |  |  | 1,278,121 |  |  | 15.55 |  |  | 6.53 |  | — |  |  | 753,064 |  |  | 15.89 |  |  | 5.20 |  | — |
$ | 20.94 |  |  |  |  | 1,646,500 |  |  | 20.94 |  |  | 6.51 |  | — |  |  | 892,000 |  |  | 20.94 |  |  | 6.02 |  | — |
$ | 21.00 |  | — | $ | 29.47 |  |  | 1,976,645 |  |  | 23.71 |  |  | 6.06 |  | — |  |  | 1,585,940 |  |  | 23.71 |  |  | 5.79 |  | — |
$ | 29.56 |  | — | $ | 65.08 |  |  | 2,508,797 |  |  | 34.46 |  |  | 4.38 |  | — |  |  | 2,448,046 |  |  | 34.47 |  |  | 4.33 |  | — |
|  |  |  | 9,022,282 |  |  | $ | 21.94 |  |  | 6.10 |  | $ | 473 |  |  | 6,264,194 |  |  | $ | 24.89 |  |  | 5.20 |  | $ | 194 |
Schedule of Restricted Stock Unit Activity | RSU activity was as follows:
| Number of Restricted Stock Units |  | Weighted Average Grant Date Fair Value |  | Weighted Average Remaining Contractual Term (Years)
Balances at December 31, 2017 | — |  |  | $ | — |  |  | 0.00
Granted | 1,069,126 |  |  | 13.84 |  |  |
Vested | (25,000) |  |  | (15.82) |  |  |
Forfeited | (73,785) |  |  | (13.47) |  |  |
Balances at December 31, 2018 | 970,341 |  |  | 13.82 |  |  | 1.43
Granted | 2,278,460 |  |  | 6.59 |  |  |
Vested | (1,159,165) |  |  | (8.74) |  |  |
Forfeited | (307,654) |  |  | (8.99) |  |  |
Balances at December 31, 2019 | 1,781,982 |  |  | 8.71 |  |  | 1.24
Granted | 3,157,390 |  |  | 3.09 |  |  |
Vested | (2,802,593) |  |  | (3.99) |  |  |
Forfeited | (409,067) |  |  | (8.59) |  |  |
Balances at December 31, 2020 | 1,727,712 |  |  | 6.11 |  |  | 0.42

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