Stock Based Compensation (Summary of Stock Option Activity) (Details) - $ / shares	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Shares
Options outstanding, beginning of year (in shares)			355,218
Exercised (in shares)	(3,500)	(3,000)	(10,000)	(15,300)
Options outstanding, end of year (in shares)	345,218		345,218		355,218
Options Exercisable (in shares)	335,216		335,216
Weighted Average Exercise Price
Options outstanding, beginning of year (in dollars per share)			$ 16.63
Exercised (in dollars per share)			9.57
Options outstanding, end of year (in dollars per share)	$ 16.83		16.83		$ 16.63
Options exercisable (in dollars per share)	$ 16.59		$ 16.59
Weighted Average Remaining Contractual Term
Options outstanding			4 years 7 months 6 days		5 years
Options exercisable			4 years 6 months