Related Party Transactions	9 Months Ended
Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	NOTE R – RELATED PARTY TRANSACTIONS On January 4, 2021, the Company purchased 1,160 shares of the Company from a retired Officer at a price per share of $66.01, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction. On February 3, 2021, the Company purchased 29,676 shares of the Company from current and retired Officers at a price per share of $69.19, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction. On March 10, 2021, the Company purchased 19,497 shares of the Company from current Officers at a price per share of $71.10, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction. On March 15, 2021, the Company purchased 2,257 shares of the Company from a current employee at a price per share of $71.91, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction. On June 9, 2021, the Company purchased 1,500 shares of the Company from a current employee at a price per share of $74.09, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction. On June 15, 2021, the Company purchased 10,000 shares of the Company from a current Officer at a price per share of $75.87, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction. On July 1, 2021, the Company purchased 7,070 shares of the Company from a retired officer at a price per share of $76.87, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

Related Party Transactions

9 Months Ended

Sep. 30, 2021

NOTE R – RELATED PARTY TRANSACTIONS

On January 4, 2021, the Company purchased 1,160 shares of the Company from a retired Officer at a price per share of $66.01, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

On February 3, 2021, the Company purchased 29,676 shares of the Company from current and retired Officers at a price per share of $69.19, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

On March 10, 2021, the Company purchased 19,497 shares of the Company from current Officers at a price per share of $71.10, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

On March 15, 2021, the Company purchased 2,257 shares of the Company from a current employee at a price per share of $71.91, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

On June 9, 2021, the Company purchased 1,500 shares of the Company from a current employee at a price per share of $74.09, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

On June 15, 2021, the Company purchased 10,000 shares of the Company from a current Officer at a price per share of $75.87, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.

On July 1, 2021, the Company purchased 7,070 shares of the Company from a retired officer at a price per share of $76.87, which was calculated from a 30-day average market price in connection with the vesting of equity awards. The Audit Committee of the Board of Directors approved this transaction.