Covered Assets and Indemnification Asset (Internal Risk Rating By Loan Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	$ 449,860	$ 477,078
Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	296,501	322,108
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	52,584	52,221
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	84,806	79,927
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	15,969	22,822
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Term & Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	350,323	369,339
Term & Multifamily [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	222,933	243,723
Term & Multifamily [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	48,419	47,880
Term & Multifamily [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	68,478	62,811
Term & Multifamily [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	10,493	14,925
Term & Multifamily [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Construction & Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	8,076	9,688
Construction & Development [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	1,817	1,792
Construction & Development [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	195
Construction & Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	4,937	4,315
Construction & Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	1,322	3,386
Construction & Development [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Residential Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	7,699	8,358
Residential Development [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Residential Development [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	383	391
Residential Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	6,097	6,658
Residential Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	1,219	1,309
Residential Development [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Term [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	17,584	19,428
Term [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	7,742	9,020
Term [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	3,418	3,401
Term [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	4,444	4,986
Term [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	1,980	2,021
Term [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
LOC & Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	13,571	14,113
LOC & Other [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	11,552	11,498
LOC & Other [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	364	354
LOC & Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	700	1,080
LOC & Other [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	955	1,181
LOC & Other [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	25,741	27,596
Mortgage [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	25,741	27,596
Mortgage [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Mortgage [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Mortgage [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Mortgage [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Home Equity Loans & Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	21,877	22,867
Home Equity Loans & Lines [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	21,727	22,790
Home Equity Loans & Lines [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Home Equity Loans & Lines [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	150	77
Home Equity Loans & Lines [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Home Equity Loans & Lines [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Consumer & Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	4,989	5,689
Consumer & Other [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	4,989	5,689
Consumer & Other [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Consumer & Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Consumer & Other [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	0	0
Consumer & Other [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Covered loans, by credit rating	$ 0	$ 0