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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [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) |  | 2022 |  |  | 2023 |
Service costs |  | $ | 171 |  |  | $ | 2 |
Sales and marketing |  |  | 796 |  |  |  | 663 |
Product development |  |  | 293 |  |  |  | 114 |
General and administrative |  |  | 1,386 |  |  |  | 1,613 |
Total stock-based compensation |  | $ | 2,646 |  |  | $ | 2,392 |
Stock-based compensation expense as reported in the Consolidated Statements of Operations for the year ended December 31, 2023, varies from the reported Stock-based compensation from options and restricted stock, net of forfeitures in the Consolidated Statements of Stockholders’ Equity for the year ended December 31, 2023, because of a reclassification of a $750.0 thousand payment owed to a former employee in connection with the Sonar acquisition. This payment was to be made, at the Company's election, in any mix of cash or restricted stock. The Company had previously determined its intent and ability to settle this obligation in restricted stock; however, in December 2023, the Company chose to settle in cash, resulting in a reclassification of this payment obligation from Additional paid-in capital to Other accrued expenses and current liabilities in the Consolidated Statements of Balance Sheets. This caused a decrease to Stock-based compensation from options and restricted stock, net of forfeitures in the Consolidated Statements of Stockholders’ Equity, with no corresponding decrease in stock-based compensation as reported in the Consolidated Statements of Operations, f or the year ended December 31, 2023.
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,
|  | 2022 |  | 2023
Expected life (in years) |  | 4.00 - 6.25 |  | 4.00 - 6.25
Risk-free interest rate |  | 2.41% - 4.30% |  | 3.86% - 3.93%
Expected volatility |  | 51% - 63% |  | 57% - 64%
Weighted average expected volatility |  | 55% |  | 57%
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, 2022 | 16,599 |  | 3,796 |  | $3.14 |  | 6.67 |  | $10
Increase to pool January 1, 2023 | 1,300 |  |  |  |  |  |  |  |
Options granted | (3,299) |  | 3,328 |  | $1.67 |  |  |  |
Restricted stock granted | (333) |  | — |  |  |  |  |  |
Restricted stock forfeited | 656 |  | — |  |  |  |  |  |
Options exercised | — |  | — |  |  |  |  |  |
Options expired | 1,115 |  | (1,115) |  | $3.62 |  |  |  |
Options forfeited | 614 |  | (614) |  | $2.49 |  |  |  |
Balance at December 31, 2023 | 16,652 |  | 5,395 |  | $2.21 |  | 7.39 |  | $1
Options exercisable at December 31, 2023 |  |  | 1,674 |  | $3.31 |  | 5.40 |  | $1
Information Related to Stock Compensation Activity | Information related to stock compensation activity during the period indicated is as follows:
|  | Years Ended December 31, |
|  | 2022 |  |  | 2023 |
Weighted average fair value of options granted |  | $ | 1.06 |  |  | $ | 0.92 |
Intrinsic value of options exercised (in thousands) |  | $ | — |  |  |  |
Total grant date fair value of restricted stock vested (in thousands) |  | $ | 1,321 |  |  | $ | 3,037 |
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, 2022 |  |  | 1,640 |  |  | $ | 2.27 |
Granted |  |  | 333 |  |  |  | 1.84 |
Vested |  |  | (535 | ) |  |  | 2.33 |
Forfeited |  |  | (656 | ) |  |  | 2.61 |
Unvested at December 31, 2023 |  |  | 782 |  |  |  | 1.94 |

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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 -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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