Allowance for Loan Losses (Schedule of Credit Losses Related to Covered Financing Receivables, Current Period) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Provision/(recapture) for loan losses	$ 6,391	$ 8,966	$ 14,200	$ 17,214
Covered impaired loan
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of the period	44,599	41,514	44,679	40,496
Net provision/(recapture) of loan losses before benefit attributable to FDIC loss share agreements	(227)	928	1,310	5,153
Net (benefit)/recapture attributable to FDIC loss share agreements	12	(1,819)	(257)	(6,046)
Provision/(recapture) for loan losses	(215)	(891)	1,053	(893)
Increase/(decrease) in loss share receivable	(12)	1,819	257	6,046
Charge-offs	(4,154)	(815)	(5,771)	(4,022)
Balance at end of the period	$ 40,218	$ 41,627	$ 40,218	$ 41,627