Item 5. Other Information	6 Months Ended
Jun. 30, 2023
Notes to Financial Statements
Issuer Rule 10b5-1, Material Terms [Text Block]	Item 5. Other Information Securities Trading Arrangements with Officers and Directors On June 15, 2023, Eileen G. Whelley, non-executive director, adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell sufficient shares of the Company’s common stock between June 3, 2024 and June 24, 2024, subject to certain conditions, to cover tax obligations related to the vesting of restricted stock units on June 1, 2024. On June 16, 2023, Lisa L. Troe, non-executive director, adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell sufficient shares of the Company’s common stock between June 3, 2024 and June 24, 2024, subject to certain conditions, to cover tax obligations related to the vesting of restricted stock units on June 1, 2024.

Item 5. Other Information

6 Months Ended

Jun. 30, 2023

Issuer Rule 10b5-1, Material Terms [Text Block]

Item 5. Other Information

Securities Trading Arrangements with Officers and Directors

On June 15, 2023, Eileen G. Whelley, non-executive director, adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell sufficient shares of the Company’s common stock between June 3, 2024 and June 24, 2024, subject to certain conditions, to cover tax obligations related to the vesting of restricted stock units on June 1, 2024.

On June 16, 2023, Lisa L. Troe, non-executive director, adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell sufficient shares of the Company’s common stock between June 3, 2024 and June 24, 2024, subject to certain conditions, to cover tax obligations related to the vesting of restricted stock units on June 1, 2024.