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Stock Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Weighted-Average Assumptions Used to Determine the Fair Value of Options
The following weighted-average assumptions were used to determine the fair value of shares purchased under the ESPP:
Three Months Ended
September 30, 2024
Nine Months Ended
September 30, 2024
ESPPESPP
Expected life0.5 Years0.5 Years
Expected stock price volatility0.360.48
Risk-free interest rate5.37%5.26%
Schedule of Total Stock Compensation Expenses
The following table summarizes total stock compensation expenses prior to the capitalization of amounts into Inventory and Deferred preservation costs (in thousands):
Three Months Ended
September 30,
Nine Months Ended
September 30,
2024202320242023
RSA, RSU, and PSU expense$3,364 $2,647 $10,222 $8,685 
Stock option and ESPP expense576 745 1,846 2,340 
Total stock compensation expense$3,940 $3,392 $12,068 $11,025