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Stock-Based Compensation
6 Months Ended
Jun. 25, 2022
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Stock-Based Compensation

10.

Stock-Based Compensation

Restricted Stock Awards (“RSAs”) and Restricted Stock Units (“RSUs”)

Vesting of RSA and RSU grants is conditional based on continued employment or service for a specified period and, in certain circumstances, the attainment of performance goals. We retain the shares underlying the grant, and any dividends paid thereon, until the vesting conditions have been met. For time-based RSA and RSU grants, compensation cost related to the awards is recognized on a straight-line basis over the vesting period and is calculated using the closing price per share of our common stock on the grant date. For performance-based RSA grants tied to growth in adjusted pre-tax income, compensation cost related to the award is recognized over the performance period and is calculated using the closing price per share of our common stock on the grant date and an estimate of the probable outcome of the performance conditions at each reporting date. Since March 2020, we have made performance-based RSU grants that vest based on our total shareholder return ranking relative to the total shareholder return of the companies comprising the S&P Mid-Cap 400 Growth Index over a three-year performance period. For these awards, compensation cost related to the award is recognized on a straight-line basis over the performance period and is calculated using the simulated fair value per share of our common stock based on the application of a Monte Carlo simulation model. For the six months ended June 25, 2022, we granted 23,995 performance-based RSUs with a grant date fair value of $111.31 per share. For the six months ended June 26, 2021, we granted 17,714 performance-based RSUs with a grant date fair value of $131.02 per share.

Compensation cost related to RSA and RSU grants was $1.7 million and $1.3 million for the three months ended June 25, 2022 and June 26, 2021, respectively, and $3.3 million and $3.1 million for the six months ended June 25, 2022 and June 26, 2021, respectively, and was included in selling, general and administrative expense in the Condensed Consolidated Statements of Operations.

The following table summarizes our RSA and RSU activity for the six months ended June 25, 2022:

 

 

Shares

 

 

Weighted

Average

Fair Value

 

Balance at December 25, 2021

 

 

206,677

 

 

$

85.97

 

Granted

 

 

95,226

 

 

$

100.79

 

Vested

 

 

(51,027

)

 

$

83.67

 

Canceled

 

 

(40,002

)

 

$

83.51

 

Balance at June 25, 2022

 

 

210,874

 

 

$

93.69

 

As of June 25, 2022, there was $14.6 million of unrecognized compensation cost related to unvested RSA and RSU grants that is expected to be recognized over a weighted average period of 2.4 years.

Stock Options

We expense the grant-date fair value of stock options as compensation cost on a straight-line basis over the vesting period for which related services are performed. The compensation cost charged against income was $0.4 million and $0.3 million for the three months ended June 25, 2022 and June 26, 2021, respectively, and $0.8 million and $0.6 million for the six months ended June 25, 2022 and June 26, 2021, respectively, and was included as selling, general and administrative expense in the Condensed Consolidated Statements of Operations.

We use the Black-Scholes option valuation model to estimate the fair value of stock options granted. Expected volatility and expected dividend yield are based on the actual historical experience of our common stock. The expected life represents the period that options granted are expected to be outstanding and was calculated using historical option exercise data. The risk-free rate was based on a U.S. Treasury security with terms equal to the expected time of exercise as of the grant date.

The following table summarizes our stock option activity for the six months ended June 25, 2022:

 

Shares

 

 

Weighted

Average

Exercise

Price

 

 

Weighted

Average

Remaining

Term

(In years)

 

 

Aggregate

Intrinsic

Value

 

Balance at December 25, 2021

 

233,396

 

 

$

77.85

 

 

 

 

 

 

 

 

 

Granted

 

78,574

 

 

$

97.16

 

 

 

 

 

 

 

 

 

Cancelled

 

(11,236

)

 

$

77.45

 

 

 

 

 

 

 

 

 

Exercised

 

(30,972

)

 

$

71.73

 

 

 

 

 

 

 

 

 

Balance at June 25, 2022

 

269,762

 

 

$

84.20

 

 

 

5.8

 

 

$

5,532,808

 

Exercisable at June 25, 2022

 

94,126

 

 

$

76.03

 

 

 

4.3

 

 

$

2,699,534

 

As of June 25, 2022, there was $3.4 million of unrecognized compensation cost related to unvested stock options that is expected to be recognized over a weighted average period of 3.1 years.

Employee Stock Purchase Plan (“ESPP”)

During the six months ended June 25, 2022 and June 26, 2021, we purchased 4,615 shares and 36,077 shares, respectively, under the ESPP. Compensation cost related to the ESPP was $0.0 million and $0.7 million for the three months ended June 25, 2022 and June 26, 2021, respectively, and $0.1 million and $0.7 million for the six months ended June 25, 2022 and June 26, 2021, respectively.