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Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2024
Schedule of allocation of total stock-based compensation expense

Three Months Ended

March 31, 

(In thousands)

    

2024

    

2023

Cost of revenue

$

83

$

103

Sales and marketing expenses

738

752

Research and development expenses

33

49

Reimbursement, general and administrative expenses

1,185

1,119

Total stock-based compensation expense

$

2,039

$

2,023

Schedule of stock option activity

    

Weighted-

Weighted-

Average

Average

Aggregate

Options

Exercise Price

Remaining

Intrinsic

(In thousands except options and per share data)

Outstanding

Per Share (1)

Contractual Life

Value (2)

Balance at December 31, 2023

429,960

$

40.74

3.8 years

$

223

Exercised

(354)

$

1.35

$

5

Forfeited

$

Cancelled/Expired

(6,849)

$

44.62

Balance at March 31, 2024

422,757

$

40.71

3.6 years

$

289

Options exercisable at March 31, 2024

395,952

$

41.94

3.5 years

$

160

(1)The exercise price of each option granted during the period shown was equal to the market price of the underlying stock on the date of grant.
(2)The aggregate intrinsic value of options exercised represents the difference between the exercise price of the option and the closing stock price of our common stock on the date of exercise. The aggregate intrinsic value of options outstanding represents the difference between the exercise price of the option and the closing stock price of our common stock on the last trading day of the period.
Time-Based Restricted Stock Units  
Schedule of stock-settled restricted stock unit activity

Weighted-

    

    

Average Grant

    

Aggregate

Units

Date Fair Value

Intrinsic

(In thousands except unit and per unit data)

Outstanding

Per Unit

Value (1)

Balance at December 31, 2023

589,142

$

16.35

$

8,425

Granted

367,036

$

13.88

Vested

(133,324)

$

17.60

Cancelled

(9,252)

$

18.20

Balance at March 31, 2024

813,602

$

15.01

$

13,221

(1)The aggregate intrinsic value of restricted stock units outstanding was based on our closing stock price on the last trading day of the period.
Performance-based stock-settled restricted stock units  
Schedule of stock-settled restricted stock unit activity

Weighted-

    

    

Average Grant

    

Aggregate

PSUs

Date Fair Value

Intrinsic

(In thousands except unit and per unit data)

Outstanding

Per Unit

Value (1)

Balance at December 31, 2023

198,232

$

18.93

$

2,785

Granted

160,659

$

13.88

Vested

(38,842)

$

29.02

Cancelled

$

Balance at March 31, 2024

320,049

$

15.17

$

5,201

(1)The aggregate intrinsic value of PSUs outstanding was based on our closing stock price on the last trading day of the period.