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Stock-Based Compensation
6 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Stock-Based Compensation
There have been no changes to our stock-based compensation plan as disclosed in our 2023 Annual Report on Form 10-K.
Our stock-settled stock appreciation rights (“SSSARs”) compensation expense was $0.3 million and $0.7 million for the three months ended December 31, 2023 and 2022, respectively. Year-to-date SSSARs compensation expense was $0.6 million for the current-year period compared to $1.4 million for the prior-year period. At December 31, 2023, there was $0.2 million of unrecognized compensation expense related to SSSARs that we will recognize over the three months ending March 31, 2024.
Our restricted stock compensation expense was $1.5 million for the three months ended December 31, 2023 and 2022. Year-to-date restricted stock compensation expense was $2.7 million for the current-year period compared to $2.8 million for the prior-year period. At December 31, 2023, there was $8.2 million of unrecognized compensation expense related to restricted stock that we will recognize over a weighted-average period of 2 years.
Our performance units compensation expense was $1.0 million and $0.6 million for the three months ended December 31, 2023 and 2022, respectively. Year-to-date performance units compensation expense was $2.1 million for the current-year period compared to $1.1 million for the prior-year period. At December 31, 2023, there was $6.5 million of unrecognized compensation expense related to performance units that we will recognize over a weighted-average period of 2 years.