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Shareholders' Equity
 3 Months Ended
Mar. 31, 2023
Equity [Abstract]  
Shareholders' Equity Shareholders’ EquityA summary of changes in shareholders’ equity for the three months ended March 31, 2023 is presented below:
 Common
Stock		Additional
Paid-In
Capital		Retained
Earnings		Treasury
Stock		Deferred
Compensation
Trust		Deferred
Compensation
Liability		Total
Balance, December 31, 2022$206 $2,600,014 $11,773,414 $(10,866,785)$(16,710)$16,710 $3,506,849 
Net income— — 344,352 — — — 344,352 
Purchase of common stock for treasury— — — (110,048)— — (110,048)
Equity-based compensation— 22,277 — — — — 22,277 
Proceeds from Options exercised— 81,916 — — — — 81,916 
Treasury stock issued upon Option exercise and RSU vesting— (27,566)— 27,566 — — — 
Balance, March 31, 2023$206 $2,676,641 $12,117,766 $(10,949,267)$(16,710)$16,710 $3,845,346 
A summary of changes in shareholders’ equity for the three months ended March 31, 2022 is presented below:
 Common
Stock		Additional
Paid-In
Capital		Retained
Earnings		Treasury
Stock		Deferred
Compensation
Trust		Deferred
Compensation
Liability		Total
Balance, December 31, 2021$206 $2,378,191 $10,047,839 $(9,423,858)$(16,710)$16,710 $3,002,378 
Net income— — 426,100 — — — 426,100 
Purchase of common stock for treasury— — — (748,788)— — (748,788)
Equity-based compensation— 11,668 — — — — 11,668 
Proceeds from Options exercised— 34,241 — — — — 34,241 
Treasury stock issued upon Option exercise and RSU vesting— (7,440)— 7,440 — — — 
Balance, March 31, 2022$206 $2,416,660 $10,473,939 $(10,165,206)$(16,710)$16,710 $2,725,599 

We repurchased 21,174 and 146,054 shares of our outstanding common stock during the three months ended March 31, 2023 and 2022, respectively. We settle Option exercises and vesting of RSUs by issuing shares of treasury stock. We issued 43,941 and 13,323 shares from the treasury account during the three months ended March 31, 2023 and 2022, respectively, in settlement of Option exercises and vesting of RSUs. Shares are relieved from the treasury account based on the weighted average cost basis of treasury shares.