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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Schedule of weighted-average assumptions used to value options as of their grant date | The weighted-average assumptions used to value options as of their grant date were as follows:
| Year Ended December 31,
| 2021 |  | 2020
Risk-free interest rate | 0.92 | % |  | 0.21 | %
Expected volatility | 44.98 | % |  | 44.03 | %
Expected life (in years) | 4.28 |  | 4.29
Dividend yield | 0 | % |  | 0 | %
Schedule of share-based compensation, stock options, activity | The changes in outstanding stock options for the year ended December 31, 2021 and 2020 are as follows:
| Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (in Years) |  | Aggregate Intrinsic Value
Outstanding at December 31, 2020 | 2,034 |  |  | $ | 9.25 |  |  |  |  |
Granted | 497 |  |  | $ | 12.68 |  |  |  |  |
Exercised | (274) |  |  | $ | 9.86 |  |  |  |  |
Expired, canceled or forfeited | (130) |  |  | $ | 9.96 |  |  |  |  |
Outstanding at December 31, 2021 | 2,127 |  |  | $ | 9.93 |  |  | 2.68 |  | $ | 931 |
Exercisable at December 31, 2021 | 858 |  |  | $ | 9.41 |  |  | 1.65 |  | $ | 453 |
Options vested or expected to vest at December 31, 2021 | 2,127 |  |  | $ | 9.93 |  |  | 2.68 |  | $ | 931 |
| Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (in Years) |  | Aggregate Intrinsic Value
Outstanding at December 31, 2019 | 1,624 |  |  | $ | 9.86 |  |  |  |  |
Granted | 654 |  |  | $ | 8.12 |  |  |  |  |
Exercised | (110) |  |  | $ | 8.02 |  |  |  |  |
Expired, canceled or forfeited | (134) |  |  | $ | 12.14 |  |  |  |  |
Outstanding at December 31, 2020 | 2,034 |  |  | $ | 9.25 |  |  | 3.21 |  | $ | 4,288 |
Exercisable at December 31, 2020 | 611 |  |  | $ | 9.83 |  |  | 2.19 |  | $ | 939 |
Options vested or expected to vest at December 31, 2020 | 2,034 |  |  | $ | 9.25 |  |  | 3.21 |  | $ | 4,288 |
Schedule of share-based compensation, restricted stock and restricted stock units activity | Restricted stock activity under the 2006 Plan and the 2016 Plan for 2021 is as follows:
| Number of Shares |  | Weighted- average grant date fair value
Outstanding at December 31, 2020, unvested | 556 |  |  | $ | 8.90 |
Granted | 217 |  |  | 12.23 |
Vested | (247) |  |  | 9.18 |
Forfeited | (37) |  |  | 9.46 |
Outstanding at December 31, 2021, unvested | 489 |  |  | $ | 10.19 |
Schedule of share-based compensation, activity | The following presents stock-based compensation expense, including expense for the ESPP, in the Company's consolidated statements of operations for the years ended December 31, 2021 and 2020.
| 2021 |  | 2020
Cost of product sales | $ | 271 |  |  | $ | 165 |
Cost of service sales | 10 |  |  | — |
Research and development | 644 |  |  | 593 |
Sales, marketing and support | 898 |  |  | 682 |
General and administrative | 2,286 |  |  | 2,022 |
| $ | 4,109 |  |  | $ | 3,462 |
Schedule of Accumulated Other Comprehensive Income (Loss) | The components of the Company’s comprehensive loss and the effect on earnings for the periods presented are detailed in the accompanying consolidated statements of comprehensive loss.
| Foreign Currency Translation |  |  |  |  |  | Total Accumulated Other Comprehensive Loss
Balance, December 31, 2019 | $ | (2,767) |  |  |  |  |  |  | $ | (2,767) |
Other comprehensive loss | (465) |  |  |  |  |  |  | (465) |
Net other comprehensive loss | (465) |  |  |  |  |  |  | (465) |
Balance, December 31, 2020 | (3,232) |  |  |  |  |  |  | (3,232) |
Other comprehensive loss | (177) |  |  |  |  |  |  | (177) |
Net other comprehensive loss | (177) |  |  |  |  |  |  | (177) |
Balance, December 31, 2021 | $ | (3,409) |  |  |  |  |  |  | $ | (3,409) |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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