Covered Assets (Credit Risk Profile by Internally Assigned Grade by Loan Status Designation) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Sep. 30, 2013
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 212,002	$ 300,610
Loans and Leases Receivable, Covered Loans, Gross	251,520	362,248
Discount balance related to acquired loans	(42,244)	(66,301)
Covered loans, allowance for losses	(2,069)	0
Loans and Leases Receivable, Covered Loans, Net Reported Amount	207,207	295,947
Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	124,687	166,636
Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	126,833	195,612
Residential Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	24,468	28,460
Construction - Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
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 & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	1,836	4,810
Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	74	245
Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	16,472	18,852
Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	63,032	89,499
Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	5,579	9,416
HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	12,725	14,750
Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	501	604
Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	27,348	44,020
Pool 2 - Single-Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	17,411	21,541
Pool 3 - Multi-family [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	890	5,231
Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	4,165	5,991
Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	68,382	105,553
Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	8,637	13,276
Pass [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	96.90%	95.60%
Pass [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	94,266	123,606
Grade as percentage of total gross loans	75.60%	74.20%
Pass [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	70,130	84,903
Pass [Member] | Residential Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	21,812	26,426
Pass [Member] | Construction - Speculative [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
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 & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	1,441	3,069
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	74	245
Pass [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	16,472	17,217
Pass [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	38,410	56,120
Pass [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,831	5,175
Pass [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	12,725	14,750
Pass [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	501	604
Pass [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	9,429	14,361
Pass [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	16,429	21,541
Pass [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	54	4,131
Pass [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,938	4,111
Pass [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	36,298	36,494
Pass [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	4,982	4,265
Special Mention [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	0.70%	0.50%
Special Mention [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	136	10,754
Grade as percentage of total gross loans	0.10%	6.40%
Special Mention [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	707	19,613
Special Mention [Member] | Residential 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 [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 & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	1,019
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 [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	136	9,235
Special Mention [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	500
Special Mention [Member] | HELOC [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 [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	4,296
Special Mention [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	707	15,113
Special Mention [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	204
Substandard [Member]
Covered Assets, Loan Status Designation [Line Items]
Grade as percentage of total gross loans	2.40%	3.90%
Substandard [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	30,285	32,276
Grade as percentage of total gross loans	24.30%	19.40%
Substandard [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	55,462	91,096
Substandard [Member] | Residential Portfolio Segment [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,656	2,034
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 & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	395	722
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 [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	1,635
Substandard [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	24,486	24,144
Substandard [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,748	3,741
Substandard [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	17,919	25,363
Substandard [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	982	0
Substandard [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	836	1,100
Substandard [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	1,227	1,880
Substandard [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	31,377	53,946
Substandard [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	3,121	8,807
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	534	0
Doubtful [Member] | Residential 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 [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 & 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 [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 [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	534	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	0	0
Loss [Member] | Residential 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 [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 & 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 [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 [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 0