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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2023
Schedule of allocation of total stock-based compensation expense

Three Months Ended

Nine Months Ended

September 30, 

September 30, 

(In thousands)

    

2023

    

2022

    

2023

    

2022

Cost of revenue

$

116

$

67

$

340

$

281

Sales and marketing expenses

634

1,101

2,196

3,352

Research and development expenses

5

54

98

175

Reimbursement, general and administrative expenses

1,011

1,338

2,963

3,873

Total stock-based compensation expense

$

1,766

$

2,560

$

5,597

$

7,681

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, 2022

615,307

$

43.25

4.7 years

$

164

Exercised

(4,432)

$

3.04

$

96

Forfeited

(24,498)

$

47.68

Cancelled/Expired

(114,932)

$

50.57

Balance at September 30, 2023

471,445

$

41.62

4.0 years

$

216

Options exercisable at September 30, 2023

400,484

$

43.45

3.8 years

$

76

(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, 2022

590,542

$

19.42

$

6,779

Granted

378,498

$

15.82

Vested

(236,284)

$

19.96

Cancelled

(114,060)

$

20.81

Balance at September 30, 2023

618,696

$

16.75

$

8,693

(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, 2022

155,618

$

25.05

$

1,786

Granted

123,575

$

15.28

Vested

(13,842)

$

42.70

Cancelled

(67,119)

$

21.50

Balance at September 30, 2023

198,232

$

18.93

$

2,785

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