Earnings Per Share (Narrative) (Details) - $ / shares	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Earnings Per Share [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.38	$ 0.38	$ 0.32	$ 0.32
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	428		228,816		411	231,938
Exercised, Number of Shares					(125,534)	(103,660)	(223,405)
Stock Issued During Period, Shares, Restricted Stock Vesting					117,129	48,861