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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Company's stock-based compensation activity
The following table shows the Company’s stock-based compensation activity:
 Fiscal Years Ended December 31,
(in thousands) 
202120202019
Stock-based compensation expense recognized $15,036 $11,384 $9,480 
Tax benefit of stock-based compensation expense in provision for income taxes3,787 2,859 2,330 
Stock-based compensation expense, net of tax$11,249 $8,525 $7,150 
Fair value of shares vested$15,701 $21,921 $16,760 
Schedule of unvested restricted stock unit activity
The following table summarizes the Company’s unvested restricted stock unit activity for the year ended December 31, 2021:
Shares
(in thousands)		Weighted-
Average
Price		Aggregate
Intrinsic
Value *
(in thousands)
Unvested Restricted Stock Units (RSUs)
Outstanding at January 1, 2021351 $66.13 $33,188 
Awarded168 93.26 
Vested(162)60.30 
Forfeited(13)81.50 
Outstanding at December 31, 2021344 $81.33 $47,721 
Outstanding and expected to vest at December 31, 2021474 $78.45 $65,984 

* The intrinsic value for outstanding and expected to vest is calculated using the closing price per share of $139.07, as reported by the New York Stock Exchange on December 31, 2021.
Share-based Payment Arrangement, Outstanding Award, Activity, Excluding Option
The Company awarded shares for service through 2021, 2020, and 2019 as shown below:
December 31,
202120202019
Shares issued6,900 7,400 4,000 
Shares settled with cash (foreign employees)6,500 5,200 3,000 
Total award13,400 12,600 7,000