Shareholders' Equity (Changes in Shares of Common Stock) (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Shareholders Equity [Line Items]
Treasury stock, beginning balance	759,555
Shares issued, beginning balance	16,099,556	16,099,556
Treasury stock purchases	766,447
Treasury stock, ending balance	724,077
Shares issued, ending balance	16,099,556	16,099,556
Common Stock [Member]
Shareholders Equity [Line Items]
Shares outstanding, beginning balance	15,340,001	15,745,453
Restricted stock units released	58,188	23,271
Treasury stock purchases	(22,710)	(469,647)
Shares outstanding, ending balance	15,375,479	15,299,077
Treasury Stock [Member]
Shareholders Equity [Line Items]
Treasury stock, beginning balance	759,555	354,103
Restricted stock units released	(58,188)	(23,271)
Treasury stock purchases	22,710	469,647
Treasury stock, ending balance	724,077	800,479