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Stock Compensation (Tables)
6 Months Ended
Jun. 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
June 30, 2024
Six Months Ended
June 30, 2024
ESPPESPP
Expected life0.5 Years0.5 Years
Expected stock price volatility0.480.48
Risk-free interest rate5.26%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
June 30,
Six Months Ended
June 30,
2024202320242023
RSA, RSU, and PSU expense$3,873 $3,396 $6,858 $6,038 
Stock option and ESPP expense583 723 1,270 1,595 
Total stock compensation expense$4,456 $4,119 $8,128 $7,633