Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Amount of Estimated Clawback Liability	$ 5,418
Payment Of Clawback If Losses Less Than Stated Levels, Period After Acquisition	10 years 45 days
Federal deposit insurance corporation loss-sharing indemnified assets	$ 4,600
Federal deposit insurance corporation loss-sharing indemnified assets receivable	$ 1,400
Maximum [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Loss Sharing Agreement Effective Years	10 years
Loss Recovery Provision Effective Years	10 years
Minimum [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Loss Sharing Agreement Effective Years	5 years
Loss Recovery Provision Effective Years	8 years
Covered Loans [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Percentage of loss shared by FDIC	80.00%
FDIC Percentage Of Loss Recoveries	80.00%
Percentage of loss shared by FDIC When Loss Share Thresholds Met	95.00%
Percentage Of Loss Recoveries Shared By FDIC When Loss Share Thresholds Met	95.00%