Condensed Consolidated Statements of Income and Retained Earnings (Unaudited) - Parenthetical - shares	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Voting Common Stock
Common stock, shares outstanding (in shares)	1,700		1,700
Nonvoting Common Stock
Common stock, shares outstanding (in shares)	168,300		168,300
Common Stock
Shares outstanding (in shares)	170,000	170,000	170,000	170,000	170,000	170,000