Fair Value Measurements (Asset Measured At Fair Value On A Nonrecurring Basis) (Details) (Fair Value Measurements Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Noncovered impaired loans at fair value:
Assets fair value, Total	$ 31,123	$ 64,225
Noncovered Impaired Loans at Fair Value Total Gains (Losses)	(1,738)	(14,398)
Commercial Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	20,601	33,137
Noncovered Impaired Loans at Fair Value Total Gains (Losses)	2,745	(6,674)
One-To-Four Family Residential [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		23
Noncovered Impaired Loans at Fair Value Total Gains (Losses)		(7)
Real Estate Construction [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		232
Noncovered Impaired Loans at Fair Value Total Gains (Losses)		3,532
Commercial [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	8,780	13,473
Noncovered Impaired Loans at Fair Value Total Gains (Losses)	(2,545)	(6,637)
Other Consumer [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	49	81
Noncovered Impaired Loans at Fair Value Total Gains (Losses)	32	31
Noncovered Other Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	676	11,315
Noncovered Impaired Loans at Fair Value Total Gains (Losses)	(1,520)	(3,998)
Covered Other Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	1,017	3,643
Noncovered Impaired Loans at Fair Value Total Gains (Losses)	(450)	(180)
Mortgage Loan Servicing Rights [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		2,321
Noncovered Impaired Loans at Fair Value Total Gains (Losses)		(465)
Level 2 Inputs [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	31,123	61,904
Level 2 Inputs [Member] | Commercial Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	20,601	33,137
Level 2 Inputs [Member] | One-To-Four Family Residential [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		23
Level 2 Inputs [Member] | Real Estate Construction [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		232
Level 2 Inputs [Member] | Commercial [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	8,780	13,473
Level 2 Inputs [Member] | Other Consumer [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	49	81
Level 2 Inputs [Member] | Noncovered Other Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	676	11,315
Level 2 Inputs [Member] | Covered Other Real Estate [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total	1,017	3,643
Level 3 Inputs [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		2,321
Level 3 Inputs [Member] | Mortgage Loan Servicing Rights [Member]
Noncovered impaired loans at fair value:
Assets fair value, Total		$ 2,321