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Employee Benefits (Tables)
 12 Months Ended
Dec. 31, 2022
Retirement Benefits [Abstract]  
Summary of Workers' Compensation Known Claims and IBNR Reserves
Workers’ compensation known claims and IBNR reserves included on the Consolidated Balance Sheets were as follows (in thousands):
As of December 31,
20222021
Included in other current liabilities$9,946 $8,048 
Included in other long-term liabilities13,730 13,397
$23,676 $21,445 
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):
As of December 31,
20222021
Included in other non-current assets$2,318 $2,137 
Contributions to Multiemployer Pensions and Health and Welfare Benefit Plans
Our contributions to multiemployer pension and health and welfare benefit plans were as follows (in thousands):
Years ended December 31,
202220212020
Pension plans$2,916 $2,783 $1,128 
Health & welfare plans3,115 2,893952
Total contributions$6,031 $5,676 $2,080 
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, 2021199,353 $68.99 143,401 $81.30 8,252 $126.89 
Granted109,189 89.32 54,585 102.98 16,618 80.55 
Vested(149,504)74.96 (71,933)59.07 (8,061)126.89 
Forfeited/Cancelled(1,921)79.60 — — (1,098)88.61 
Nonvested awards/units at December 31, 2022157,117 $77.31 126,053 $103.37 15,711 $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):

Years ended December 31,
202220212020
Common Stock Awards$6,247 $5,285 $4,116 
Non-Employee Common Stock Awards547 465 333 
Performance-Based Stock Awards5,337 4,528 3,869 
Liability Performance-Based Stock Awards493 2,612 1,969 
Performance-Based Restricted Stock Units1,192 862 539 
$13,816 $13,752 $10,826 
We recorded the following stock compensation expense, by income statement category (in thousands):
Years ended December 31,
202220212020
Cost of sales$648 $448 $284 
Selling478 204 202 
Administrative12,690 13,100 10,340 
$13,816 $13,752 $10,826 
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 December 31, 2022
Unrecognized
Compensation Expense
on Unvested Awards		Weighted Average
Remaining
Vesting Period
Common Stock Awards$6,259 1.7
Performance-Based Stock Awards5,825 1.6
Performance-Based Restricted Stock Units348 0.3
Total unrecognized compensation expense related to unvested awards$12,432