Business Combinations (Schedule of Acquisitions Related Costs by Component) (Details) - MidSouth [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Business Acquisition [Line Items]
Personnel expense		$ 5,002
Net occupancy expense		735
Equipment expense		188
Data processing expense		437
Professional services expense		7,491
Advertising		2,624
Printing and supplies		433
Other expense		11,900
Total acquisition related expenses	$ 28,800	$ 28,810