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Stock-Based Compensation
 6 Months Ended
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation

12. Stock-Based Compensation

The following details the components of stock-based compensation for the respective periods:

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

($ in thousands)

 

2022

 

 

2021

 

 

2022

 

 

2021

 

Operating expenses

 

$

284

 

 

$

248

 

 

$

498

 

 

$

442

 

Selling, general and administrative expenses

 

 

4,282

 

 

 

3,325

 

 

 

8,514

 

 

 

6,039

 

Total stock-based compensation expense

 

$

4,566

 

 

$

3,573

 

 

$

9,012

 

 

$

6,481

 

The increase in stock-based compensation expense of $1.0 million and $2.5 million during the three and six months ended June 30, 2022 is primarily due to the accelerated vesting of RSUs granted to an executive officer as part of a separation agreement.