Covered Assets - Aging Analysis of Non-Credit Impaired Loans (Details) (Acquired Non Impaired Assets [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	$ 83,445	$ 100,161
Current	82,807	98,342
30 Days	56	241
60 Days	204	40
90 Days	378	1,538
Total	638	1,819
Ratio of past due loans to total loans receivable	0.76%	1.82%
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	21,876	23,067
Current	21,306	22,391
30 Days	27	230
60 Days	201	40
90 Days	342	406
Total	570	676
Ratio of past due loans to total loans receivable	2.61%	2.93%
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	389	1,364
Current	353	1,328
30 Days	0	0
60 Days	0	0
90 Days	36	36
Total	36	36
Ratio of past due loans to total loans receivable	9.25%	2.64%
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	73	73
Current	73	73
30 Days	0	0
60 Days	0	0
90 Days	0	0
Total	0	0
Ratio of past due loans to total loans receivable	0.00%	0.00%
Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	4,250	6,598
Current	4,250	5,502
30 Days	0	0
60 Days	0	0
90 Days	0	1,096
Total	0	1,096
Ratio of past due loans to total loans receivable	0.00%	16.61%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	40,127	51,336
Current	40,127	51,336
30 Days	0	0
60 Days	0	0
90 Days	0	0
Total	0	0
Ratio of past due loans to total loans receivable	0.00%	0.00%
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	5,111	5,492
Current	5,111	5,492
30 Days	0	0
60 Days	0	0
90 Days	0	0
Total	0	0
Ratio of past due loans to total loans receivable	0.00%	0.00%
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	11,226	11,777
Current	11,197	11,777
30 Days	29	0
60 Days	0	0
90 Days	0	0
Total	29	0
Ratio of past due loans to total loans receivable	0.26%	0.00%
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loans Net of LIP & Chg.-Offs	393	454
Current	390	443
30 Days	0	11
60 Days	3	0
90 Days	0	0
Total	$ 3	$ 11
Ratio of past due loans to total loans receivable	0.76%	2.42%

Covered Assets - Aging Analysis of Non-Credit Impaired Loans (Details) (Acquired Non Impaired Assets [Member], USD $)
In Thousands, unless otherwise specified