Earnings Per Share (Narrative) (Details) - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Earnings Per Share [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.38	$ 0.32
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	394	235,059
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	61,804	47,224	223,405
Stock Issued During Period, Shares, Restricted Stock Vesting	92,295	35,882