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Income Tax (Benefit) Expense
 9 Months Ended
Sep. 30, 2022
Income Tax Disclosure [Abstract]  
Income Tax (Benefit) Expense Income Tax (Benefit) Expense
The following table provides information regarding the Company’s income tax (benefit) expense for the three and nine months ended September 30, 2022 and 2021 (dollars in thousands):
Three Months Ended
September 30,		Nine Months Ended September 30,
2022202120222021
(unaudited)(unaudited)
Income tax (benefit) expense$(2,193)$7,398 $(9,627)$20,142 
Effective tax rate493.9 %25.5 %(37.6)%28.3 %

The decrease in income tax expense for the three months ended September 30, 2022 compared to the same period in prior year was primarily due to lower earnings before income taxes. The change in effective tax rate for the three months ended September 30, 2022 compared to the same period in prior year was primarily due to larger excess tax benefits of stock-based awards in 2022.

The change in income tax (benefit) expense and effective tax rate for the nine months ended September 30, 2022 compared to the same period in the prior year was primarily due to tax benefits associated with the Adamas legal entities reorganization in the first quarter of 2022.