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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2022
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-based Compensation Expense Included in Operating Expense | Stock-based compensation expense was included in the following operating expense categories:
|  | Years ended December 31, |
(In Thousands) |  | 2021 |  |  | 2022 |
Service costs |  | $ | 49 |  |  | $ | 171 |
Sales and marketing |  |  | 870 |  |  |  | 796 |
Product development |  |  | 296 |  |  |  | 293 |
General and administrative |  |  | 1,459 |  |  |  | 1,386 |
Total stock-based compensation |  | $ | 2,674 |  |  | $ | 2,646 |
Assumptions to Estimate Fair Value for Stock Options at Grant Date | The following assumptions were used in determining the fair value of time-vested stock options granted for the periods indicated:
|  | Years Ended December 31,
|  | 2021 |  | 2022
Expected life (in years) |  | 4.00-6.25 |  | 4.00-6.25
Risk-free interest rate |  | 0.64% - 1.35% |  | 2.41% - 4.30%
Expected volatility |  | 50% - 59% |  | 51% - 63%
Weighted average expected volatility |  | 55% |  | 55%
Stock Option, Restricted Stock Award, and Restricted Stock Unit Activity | Stock option, restricted stock award, and restricted stock unit activity during the period is as follows:
|  | Options and Restricted Stock available for grant (in thousands) |  |  | Number of options outstanding (in thousands) |  |  | Weighted average exercise price of options |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value (in thousands) |
Balance at December 31, 2021 |  |  | 16,116 |  |  |  | 3,601 |  |  | $ | 3.43 |  |  |  | 6.46 |  |  | $ | 360 |
Increase to pool January 1, 2022 |  |  | 1,262 |  |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |
Options granted |  |  | (739 | ) |  |  | 739 |  |  | $ | 2.08 |  |  |  |  |  |  |  |  |
Restricted stock granted |  |  | (636 | ) |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock forfeited |  |  | 22 |  |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |
Options exercised |  |  | 2 |  |  |  | (2 | ) |  | $ | 1.66 |  |  |  |  |  |  |  |  |
Options expired |  |  | 439 |  |  |  | (439 | ) |  | $ | 3.69 |  |  |  |  |  |  |  |  |
Options forfeited |  |  | 133 |  |  |  | (133 | ) |  | $ | 3.14 |  |  |  |  |  |  |  |  |
Balance at December 31, 2022 |  |  | 16,599 |  |  |  | 3,766 |  |  | $ | 3.14 |  |  |  | 6.67 |  |  | $ | 10 |
Options exercisable at December 31, 2022 |  |  |  |  |  |  | 2,113 |  |  | $ | 3.74 |  |  |  | 5.00 |  |  | $ | 3 |
Information Related to Stock Compensation Activity | Information related to stock compensation activity during the period indicated is as follows:
|  | Years Ended December 31, |
|  | 2021 |  |  | 2022 |
Weighted average fair value of options granted |  | $ | 1.21 |  |  | $ | 1.06 |
Intrinsic value of options exercised (in thousands) |  | $ | 71 |  |  | $ | - |
Total grant date fair value of restricted stock vested (in thousands) |  | $ | 1,786 |  |  | $ | 1,321 |
Summary of Restricted Stock Awards and Restricted Stock Units | Restricted stock awards and restricted stock unit activity during the period is as follows:
|  | Shares/ Units (In Thousands) |  |  | Weighted Average Grant Date Fair Value |
Unvested at December 31, 2021 |  |  | 1,518 |  |  | $ | 2.80 |
Granted |  |  | 636 |  |  |  | 2.06 |
Vested |  |  | (492 | ) |  |  | 2.68 |
Forfeited |  |  | (22 | ) |  |  | 3.66 |
Unvested at December 31, 2022 |  |  | 1,640 |  |  |  | 2.53 |

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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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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