For the 6 months ended June 30, 2023 compared to the prior year period, the increase was due to an increase in share based compensation expense and marketing expenses, offset by a decrease in professional fees and services, which includes legal fees. Non cash share based compensation expense included within SG and A expense for the quarter was $9,800,000 versus $8,900,000 for the prior year period. Non cash share based compensation expense included with SG and A was $17,400,000 $14,900,000 for the 6 months ended June 30, 2023 and June 30, 2022, respectively. Research and development R and D expenses, inclusive of share based compensation, were $12,700,000 $11,500,000 for the quarters ended June 30, 2023 June 30, 2022. R and D expenses, inclusive of share based compensation expense, were $25,800,000 $24,100,000 for the 6 months ended June 30, 2023 June 30, 2022 respectively.