Goodwill And Other Intangible Assets (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) reporting_unit	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Oct. 01, 2016 USD ($)	Jun. 30, 2015 USD ($)
Goodwill [Line Items]
Goodwill	$ 59,678	$ 24,431	$ 24,431
Number of reporting units | reporting_unit	2
Aggregate amortization	$ 521	503	603
Aggregate estimated amortization expense in 2017	1,100
Aggregate estimated amortization expense in 2018	1,200
Aggregate estimated amortization expense in 2019	1,200
Aggregate estimated amortization expense in 2020	1,200
Aggregate estimated amortization expense in 2021	1,200
Global One [Member]
Goodwill [Line Items]
Goodwill				$ 35,247
Intangible assets	13,400			$ 13,400
Intangible assets, gross	14,000
Amortization of intangible assets	817
Intangible assets, net	13,200
Trust Services [Member]
Goodwill [Line Items]
Goodwill	24,431	24,431	24,431		$ 77,400
Goodwill, fair value					129,200
Amount of fair value in excess of carrying amount					$ 51,800
Percentage of fair value in excess of carrying amount					40.00%
Synovus Bank [Member]
Goodwill [Line Items]
Goodwill	$ 35,247	$ 0	$ 0