Loans and Allowance for Loan Losses (Activity in Loss Share Receivable) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loans and Allowance for Loan Losses [Abstract]
Beginning balance		$ 16,219	$ 29,868
Amortization	$ (1,539)	(2,427)	(4,678)
Charge-offs, write-downs and other recoveries		(2,442)	(5,569)
External expenses qualifying under loss share agreement		79	1,000
Adjustment due to changes in cash flow projections		(2,526)	(3,027)
Net payments to FDIC		934	436
Write-down for termination of loss share agreement		6,603
Cash received from FDIC for final settlement of agreements		(3,234)
Ending balance	$ 18,030		$ 18,030