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Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2023
Postemployment Benefits [Abstract]  
Summary of Workers' Compensation Known Claims and IBNR Reserves Workers’ compensation known claims and IBNR reserves included on the Condensed Consolidated Balance Sheets were as follows (in thousands):
 March 31, 2023December 31, 2022
Included in other current liabilities$8,782 $9,946 
Included in other long-term liabilities16,550 13,730 
$25,332 $23,676 
Schedule of Insurance Receivable for Claims This receivable offsets an equal liability included within the reserve amounts noted above and was as follows (in thousands):
 March 31, 2023December 31, 2022
Included in other non-current assets$2,743 $2,318 
Summary of Equity-based Awards for Employees
Amounts and changes for each category of equity-based award were as follows:
 Common Stock AwardsPerformance-Based Stock AwardsPerformance-Based Restricted Stock Units
 AwardsWeighted Average Grant Date Fair Value Per ShareAwardsWeighted Average Grant Date Fair Value Per ShareUnitsWeighted Average Grant Date Fair Value Per Share
Nonvested awards/units at December 31, 2022
157,117 $77.31 126,053 $103.37 15,711 $80.55 
Granted7,690 109.76 69,281 109.09 — — 
Vested(569)82.14 — — — — 
Forfeited/Cancelled(398)86.72 — — (289)80.55 
Nonvested awards/units at March 31, 2023163,840 $78.79 195,334 $105.40 15,422 $80.55 
Summary of Stock Compensation Expenses
The following table summarizes the share-based compensation expense recognized under our 2014 Omnibus Incentive Plan (in thousands):
 Three months ended March 31,
 20232022
Common Stock Awards$1,393 $1,531 
Non-Employee Common Stock Awards148 124 
Performance-Based Stock Awards1,563 1,315 
Liability Performance-Based Stock Awards26 206 
Performance-Based Restricted Stock Units306 242 
$3,436 $3,418 
We recorded the following stock compensation expense by income statement category (in thousands):
 Three months ended March 31,
 20232022
Cost of sales$165 $149 
Selling136 62 
Administrative3,135 3,207 
$3,436 $3,418 
Unrecognized Share-Based Compensation Expense Related to Unvested Awards
Unrecognized share-based compensation expense related to unvested awards was as follows (in thousands):
 As of March 31, 2023
 Unrecognized
Compensation Expense
on Unvested Awards		Weighted Average
Remaining
Vesting Period
Common Stock Awards$5,561 1.7
Performance-Based Stock Awards11,112 2.1
Performance-Based Restricted Stock Units41 0.1
Total unrecognized compensation expense related to unvested awards$16,714