Covered Assets (Credit Risk Profile by Internally Assigned Grade by Loan Status Designation) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012
Covered Assets, Loan Status Designation [Line Items]
Loans and Leases Receivable, Covered Loans, Gross	$ 465,882	$ 373,455
Discount balance related to acquired loans	(85,288)	(85,079)
Covered loans, allowance for losses	0	0
Loans and Leases Receivable, Covered Loans, Net Reported Amount	380,594	288,376
Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	211,779	228,843
Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	254,103	144,612
Single Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	34,645	35,676
Single Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	26,815	3,622
Construction, Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	102	90
Construction, Custom [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Land, Acquisition and Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	10,868	11,430
Land, Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	443	498
Multi Family Housing [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	26,642	27,645
Multi Family Housing [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	5,872	2,996
Commercial Real Estate Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	109,792	121,592
Commercial Real Estate Portfolio Segment [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	133,471	67,592
Commercial and Industrial Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	12,010	13,023
Commercial and Industrial Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	24,766	15,259
Home Equity Line of Credit [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	16,556	17,971
Consumer Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	721	918
Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	54,857	50,953
HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	8,322	4,190
Pass [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	94.60%	94.90%
Pass [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	152,825	176,763
Grade as percentage of total gross loans	72.20%	77.30%
Pass [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	15,749
Pass [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	31,560	32,272
Pass [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	669
Pass [Member] | Construction, Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	102	90
Pass [Member] | Construction, Custom [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Pass [Member] | Land, Acquisition and Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	3,065	3,440
Pass [Member] | Land, Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	443	498
Pass [Member] | Multi Family Housing [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	23,902	24,898
Pass [Member] | Multi Family Housing [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	70,032	89,530
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	404
Pass [Member] | Commercial and Industrial Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	6,444	7,146
Pass [Member] | Commercial and Industrial Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	3,787
Pass [Member] | Home Equity Line of Credit [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	16,556	17,971
Pass [Member] | Consumer Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	721	918
Pass [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	9,795
Pass [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	1,094
Special Mention [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	0.80%	0.60%
Special Mention [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	12,619	2,778
Grade as percentage of total gross loans	6.00%	1.20%
Special Mention [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	15,385	32,092
Special Mention [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	665	0
Special Mention [Member] | Construction, Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Construction, Custom [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Land, Acquisition and Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	1,482	1,970
Special Mention [Member] | Land, Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Multi Family Housing [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Multi Family Housing [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	10,637	298
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	400	25,785
Special Mention [Member] | Commercial and Industrial Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	500	510
Special Mention [Member] | Commercial and Industrial Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	3,633	1,006
Special Mention [Member] | Home Equity Line of Credit [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Consumer Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	9,782	5,301
Special Mention [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	905	0
Substandard [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	4.60%	4.50%
Substandard [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	46,335	49,302
Grade as percentage of total gross loans	21.90%	21.50%
Substandard [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	31,679	96,771
Substandard [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	3,085	3,404
Substandard [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	2,953
Substandard [Member] | Construction, Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Construction, Custom [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Land, Acquisition and Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	6,321	6,020
Substandard [Member] | Land, Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Multi Family Housing [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,740	2,747
Substandard [Member] | Multi Family Housing [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	2,996
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	29,123	31,764
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	25,636	41,403
Substandard [Member] | Commercial and Industrial Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	5,066	5,367
Substandard [Member] | Commercial and Industrial Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	994	10,466
Substandard [Member] | Home Equity Line of Credit [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Consumer Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	5,049	35,857
Substandard [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	3,096
Doubtful [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	0.00%	0.00%
Doubtful [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Grade as percentage of total gross loans	0.00%	0.00%
Doubtful [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	89,194	0
Doubtful [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	1,783	0
Doubtful [Member] | Construction, Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Construction, Custom [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Land, Acquisition and Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Land, Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Multi Family Housing [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Multi Family Housing [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,973	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	40,775	0
Doubtful [Member] | Commercial and Industrial Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Commercial and Industrial Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	10,144	0
Doubtful [Member] | Home Equity Line of Credit [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Consumer Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	30,539	0
Doubtful [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,980	0
Loss [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	0.00%	0.00%
Loss [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Grade as percentage of total gross loans	0.00%	0.00%
Loss [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	136,258	0
Loss [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,448	0
Loss [Member] | Construction, Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Construction, Custom [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Land, Acquisition and Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Land, Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Multi Family Housing [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Multi Family Housing [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,973	0
Loss [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Commercial Real Estate Portfolio Segment [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	66,811	0
Loss [Member] | Commercial and Industrial Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Commercial and Industrial Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	14,771	0
Loss [Member] | Home Equity Line of Credit [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Consumer Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	45,370	0
Loss [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 3,885	$ 0