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Employee Benefits (Tables) | 3 Months Ended
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Mar. 31, 2020
Postemployment Benefits [Abstract] |
Summary of Workers' Compensation Known Claims and IBNR Reserves | Workers’ compensation expense totaled $4.4 million and $4.2 million for the three months ended March 31, 2020 and 2019, respectively. Workers’ compensation known claims and IBNR reserves included on the Condensed Consolidated Balance Sheets were as follows (in thousands):
|  | March 31, 2020 |  |  | December 31, 2019 |
Included in other current liabilities |  | $ | 6,063 |  |  | $ | 6,777 |
Included in other long-term liabilities |  |  | 12,165 |  |  |  | 10,874 |
|  | $ | 18,228 |  |  | $ | 17,651 |
Schedule of Insurance Receivable for Claims | We also had an insurance receivable for claims that exceeded the stop loss limit for fully insured policies included on the Condensed Consolidated Balance Sheets. This receivable offsets an equal liability included within the reserve amounts noted above and was as follows (in thousands):
|  | March 31, 2020 |  |  | December 31, 2019 |
Included in other non-current assets |  | $ | 1,955 |  |  | $ | 2,098 |
Summary of Equity-based Awards for Employees | Amounts and changes for each category of equity-based award were as follows:
|  | Common Stock Awards |  |  | Performance-Based Stock Awards |  |  | Performance-Based Restricted Stock Units |
|  | Awards |  |  | Weighted Average Grant Date Fair Value Per Share |  |  | Awards |  |  | Weighted Average Grant Date Fair Value Per Share |  |  | Units |  |  | Weighted Average Grant Date Fair Value Per Share |
Nonvested awards/units at December 31, 2019 |  |  | 152,882 |  |  | $ | 52.93 |  |  |  | 160,289 |  |  | $ | 50.49 |  |  |  | 13,186 |  |  | $ | 51.62 |
Granted |  |  | 7,420 |  |  |  | 75.88 |  |  |  | 57,450 |  |  |  | 77.28 |  |  |  | — |  |  |  | — |
Vested |  |  | (568 | ) |  |  | 52.63 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeited/Cancelled |  |  | (1,759 | ) |  |  | 52.25 |  |  |  | — |  |  |  | — |  |  |  | (92 | ) |  |  | 51.62 |
Nonvested awards/units at March 31, 2020 |  |  | 157,975 |  |  | $ | 54.02 |  |  |  | 217,739 |  |  | $ | 57.53 |  |  |  | 13,094 |  |  | $ | 51.62 |
Summary of Stock Compensation Expenses | We recorded the following stock compensation expense by income statement category (in thousands):
|  | Three months ended March 31, |
|  | 2020 |  |  | 2019 |
Cost of sales |  | $ | 96 |  |  | $ | 78 |
Selling |  |  | 49 |  |  |  | 44 |
Administrative |  |  | 2,536 |  |  |  | 1,816 |
|  | $ | 2,681 |  |  | $ | 1,938 |

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