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Earnings Per Common Share and Share Awards Computation Of Basic And Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net Income Attributable to the Company	$ 21,892	$ 25,707	$ 19,523
Weighted Average Shares Outstanding – Basic	1,887	1,886	1,908
Incremental shares outstanding assuming the exercise of dilutive stock options and SARs (share-settled)	10	10	7
Weighted average common shares outstanding – Diluted	1,897	1,896	1,915
Basic Earnings per Common Share	$ 11.60	$ 13.63	$ 10.23
Diluted Earnings per Common Share	$ 11.54	$ 13.56	$ 10.19

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