Earnings Per Share (Schedule of Weighted Average Number of Shares for Calculating Diluted Earnings Per Share) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net income per share:
Weighted average common shares outstanding	30,933	30,933
Unconverted restricted stock units	87	75
Common shares outstanding for diluted earnings per share	31,020	31,008